start-ver=1.4 cd-journal=joma no-vol=75 cd-vols= no-issue=1-3 article-no= start-page=297 end-page=316 dt-received= dt-revised= dt-accepted= dt-pub-year=1963 dt-pub=19630330 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Studies on the Treatment of Malignant Tumors With Fibroblasts Inhibiting Agents Basic and Clinical Studies of Chloroquine Derivatives. (1) kn-title=線維芽細胞抑制剤による悪性腫瘍の治療に関する研究 クロロキン剤の基礎と臨床（第一報） en-subtitle= kn-subtitle= en-abstract= kn-abstract=Followings are the results derived from the treatment of animal and human cancers with a fibroblasts inhibiting agent such as chloroquine, based on the unique idea of ours. 1). In implanted tumors of animals, the effect was noted in Bashford cancer and Brown-Pearce cancer relatively rich in connective tissue in terms of life prolongation, an inhibition of tumor growth and of decrease of liver catalase activity, an improvement of iron metabolism, an enlargement of necrotic area in histology, an inhibition of connective tissue conponents, and a decrease of acid mucopolysaccharides. A tendency for a decrease of amount and cell numbers of ascites was almost the only effect noted in Ehrlich cancer, Yoshida sarcoma, and MH 134 poor in connective tissue. 2). 75 cases of humau cancer were treated with this agent and among these 75 the effect was evaluated in 40 cases with definite histological diagnosis in respects with subjective and objective improvement. It was effective in 28 cases, resulted failure in 11 cases, and gave an obscure result in 1 case. Cases which were treated for more than 2m onths never resulted in therapeutic failure, indicating that the agent was somehow effective for all cases but those in the last stadium. In respect with organs involved, the effect was most prominent in lung cancer and urinary bladder cancer, somewhat less in gastric cancer, and often seen in carcinomatous peritonitis and many other advanced cancers. This effect was noted in a comparatively short period in terms of subjective improvement, regression in size of tumors in a number of cases, a decrease of serum lactic acid dehydrogenase, and improvement of general condition, a tendency for necrosis of tumor and an inhibition of interstitium. 3). The above results indicate that the agent is more effective for tumors rich in connective tissue and that it's secondary effect on tumors through the inhibition of interstitial connective tissue is considered as the operative mechanism of chloroquine against malignant tumors, but it's anti-inflammatory effect and generalized influence on hosts are to be taken into consideration. The agent is indicated in inoperable cases, postoperative relapse, or prior and following an operation. A search for stronger fibroblasts inhibiting agents and an evaluation of combined therapy with so called anti-cancer agents are being made and that with mitomycin C is giving a fairly promising result. en-copyright= kn-copyright= en-aut-name=HirakiKiyoshi en-aut-sei=Hiraki en-aut-mei=Kiyoshi kn-aut-name=平木潔 kn-aut-sei=平木 kn-aut-mei=潔 aut-affil-num=1 ORCID= en-aut-name=KimuraIkuro en-aut-sei=Kimura en-aut-mei=Ikuro kn-aut-name=木村郁郎 kn-aut-sei=木村 kn-aut-mei=郁郎 aut-affil-num=2 ORCID= en-aut-name=OtaZensuke en-aut-sei=Ota en-aut-mei=Zensuke kn-aut-name=太田善介 kn-aut-sei=太田 kn-aut-mei=善介 aut-affil-num=3 ORCID= en-aut-name=AsanoKenwo en-aut-sei=Asano en-aut-mei=Kenwo kn-aut-name=浅野健夫 kn-aut-sei=浅野 kn-aut-mei=健夫 aut-affil-num=4 ORCID= en-aut-name=KageyamaHiroshi en-aut-sei=Kageyama en-aut-mei=Hiroshi kn-aut-name=影山浩 kn-aut-sei=影山 kn-aut-mei=浩 aut-affil-num=5 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷貢一 kn-aut-sei=渋谷 kn-aut-mei=貢一 aut-affil-num=6 ORCID= en-aut-name=KotaniHidenari en-aut-sei=Kotani en-aut-mei=Hidenari kn-aut-name=小谷秀成 kn-aut-sei=小谷 kn-aut-mei=秀成 aut-affil-num=7 ORCID= en-aut-name=MatsuuraRyozo en-aut-sei=Matsuura en-aut-mei=Ryozo kn-aut-name=松浦良三 kn-aut-sei=松浦 kn-aut-mei=良三 aut-affil-num=8 ORCID= en-aut-name=TsuchidaJunichiro en-aut-sei=Tsuchida en-aut-mei=Junichiro kn-aut-name=土田潤一郎 kn-aut-sei=土田 kn-aut-mei=潤一郎 aut-affil-num=9 ORCID= en-aut-name=SezakiTatsuo en-aut-sei=Sezaki en-aut-mei=Tatsuo kn-aut-name=瀬崎達雄 kn-aut-sei=瀬崎 kn-aut-mei=達雄 aut-affil-num=10 ORCID= en-aut-name=HiraokaToshinobu en-aut-sei=Hiraoka en-aut-mei=Toshinobu kn-aut-name=平岡敏延 kn-aut-sei=平岡 kn-aut-mei=敏延 aut-affil-num=11 ORCID= en-aut-name=HimeiHajime en-aut-sei=Himei en-aut-mei=Hajime kn-aut-name=姫井孟 kn-aut-sei=姫井 kn-aut-mei=孟 aut-affil-num=12 ORCID= en-aut-name=MoritaniYoshiaki en-aut-sei=Moritani en-aut-mei=Yoshiaki kn-aut-name=守谷欣明 kn-aut-sei=守谷 kn-aut-mei=欣明 aut-affil-num=13 ORCID= en-aut-name=YamanaMasatoshi en-aut-sei=Yamana en-aut-mei=Masatoshi kn-aut-name=山名正俊 kn-aut-sei=山名 kn-aut-mei=正俊 aut-affil-num=14 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=2 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=3 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=4 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=5 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=6 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=7 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=8 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=9 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=10 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=11 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=12 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=13 en-affil= kn-affil=岡山大学医学部平木内科 affil-num=14 en-affil= kn-affil=岡山大学医学部平木内科 END start-ver=1.4 cd-journal=joma no-vol=7 cd-vols= no-issue=2 article-no= start-page=113 end-page=120 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Senior high school students' recognition and interest in allied medical education of college kn-title=医療技術教育に対する高校生の認識と関心に関する研究 en-subtitle= kn-subtitle= en-abstract=A survey was carried out by senior high school students in Okayama and nine surrounding prefectures from July through September, 1996. Data obtained from 1998 twelfth-grade students studying general courses at 52 schools were computed. Eighty four percent of the 891 male students and 54.2% of the 1,077 female students wished to go on to senior college. Sixtyseven percent of the male students wished to enter science college courses, while only 25.8% of female students did. The rate of students who knew about the course of allied medical science in senior or junior colleges was 63.8% for male students and 82.5% for female students. The nursing course was popular among both sexes, but other courses such as radiological technology, medical technology, physical therapy and occupational therapy were not well known, especially among male students. It was thought that students wishing to go on to the senior college were not interested in those areas which were usually taught in three year courses at junior colleges or special (vocational) schools. Accordingly, the data showed that their interests in the allied medical course would be increased by the shifting it to a four year course. To attract senior high school students who are both intelligent and talented in the medical and health field, the authors concluded that the further improvement of educational course for allied medicine, especially such as shifting to a four year course, and the bettering of position of comedical workers through it are needed. kn-abstract=1996年7～9月にかけて,岡山県周辺の10県下高校普通科3年在学中の学生に志望進路,志望分野とともに大学,短期大学における医療技術教育への認識と関心についてアンケート調査を行った｡サンプリングによって依頼した127校のうち回答が得られたのは52校(回収率40.9%)で,得られた回答数は合計1,998人(男子891人,女子1,077人,不明30人)であった｡これらの分析から,これらの地域では進学志望者の率は高く,特に男子に著名で,男女ともに理系への志望が多いことを認めた｡医療技術系大学の認識は看護学科を除いて低く,関心も特に男子で低かった｡4年制大学の進学を志望する学生にとっては, 3年制の多い医療技術系短期大学には関心が寄せがたく, 4年制へ移行した場合には関心も志望も高まる事が認められた｡将来この分野を担う人材の確保には現在の医療短大の4年制化や医療技術職の待遇改善が重要である と結論づけた｡ en-copyright= kn-copyright= en-aut-name=OhtaTakeo en-aut-sei=Ohta en-aut-mei=Takeo kn-aut-name=太田武夫 kn-aut-sei=太田 kn-aut-mei=武夫 aut-affil-num=1 ORCID= en-aut-name=ShimoishiYasuaki en-aut-sei=Shimoishi en-aut-mei=Yasuaki kn-aut-name=下石靖昭 kn-aut-sei=下石 kn-aut-mei=靖昭 aut-affil-num=2 ORCID= en-aut-name=KageyamaJingo en-aut-sei=Kageyama en-aut-mei=Jingo kn-aut-name=景山甚郷 kn-aut-sei=景山 kn-aut-mei=甚郷 aut-affil-num=3 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=4 ORCID= en-aut-name=TohgeHiroko en-aut-sei=Tohge en-aut-mei=Hiroko kn-aut-name=唐下博子 kn-aut-sei=唐下 kn-aut-mei=博子 aut-affil-num=5 ORCID= en-aut-name=EndoHiroshi en-aut-sei=Endo en-aut-mei=Hiroshi kn-aut-name=遠藤浩 kn-aut-sei=遠藤 kn-aut-mei=浩 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=2 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=3 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=4 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=5 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部 en-keyword=医療技術教育 (the allied medical education) kn-keyword=医療技術教育 (the allied medical education) en-keyword=高校生 (senior high school students) kn-keyword=高校生 (senior high school students) en-keyword=短期大学 (junior college) kn-keyword=短期大学 (junior college) en-keyword=大学 (college) kn-keyword=大学 (college) en-keyword=進学 (high school students wishing to go on to college) kn-keyword=進学 (high school students wishing to go on to college) END start-ver=1.4 cd-journal=joma no-vol=7 cd-vols= no-issue=2 article-no= start-page=105 end-page=112 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Clinical evaluation was examined between mixed type barium sulfate suspensions "BarytgenHD" and "Barytgen" kn-title=混合粒子型硫酸バリウム｢バリトゲンHD｣の評価 en-subtitle= kn-subtitle= en-abstract=Both barium sulfate suspensions, Barytgen HD and Barytgen, had good stability. Although significant difference was not abserved in coating and visualization of gastric area, BarytgenHD showed better marginal visualization of gastric margin. Further study is needed to improve the visualization of sticky coating of gastric mucosa and many bubbles. BarytgenHD was easily to drink instead of high density barium sulfate suspensions. kn-abstract=混合粒子型硫酸バリウムバリトゲンHD200w/v%懸濁液について,バリトゲン160w/v%懸濁液と比較検討を行った｡懸濁液安定性は両者共良かった｡臨床評価においては,付着性,胃小区描出能は同程度であり,辺縁の描出能は良かったが凝集･ムラ付き,気泡は多くみられ懸濁液濃度について検討を加える必要があると考える｡飲み易さは,バリトゲンHD200w/v%懸濁液のほうが濃度が高いのにもかかわらず飲み易く好評であった｡ en-copyright= kn-copyright= en-aut-name=NobuharaEitarou en-aut-sei=Nobuhara en-aut-mei=Eitarou kn-aut-name=延原栄太朗 kn-aut-sei=延原 kn-aut-mei=栄太朗 aut-affil-num=1 ORCID= en-aut-name=TakedaYoshihiro en-aut-sei=Takeda en-aut-mei=Yoshihiro kn-aut-name=竹田芳弘 kn-aut-sei=竹田 kn-aut-mei=芳弘 aut-affil-num=2 ORCID= en-aut-name=ShibuyaKohichi en-aut-sei=Shibuya en-aut-mei=Kohichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=3 ORCID= en-aut-name=OguriNobuhiro en-aut-sei=Oguri en-aut-mei=Nobuhiro kn-aut-name=小栗宣博 kn-aut-sei=小栗 kn-aut-mei=宣博 aut-affil-num=4 ORCID= en-aut-name=AriokaTadashi en-aut-sei=Arioka en-aut-mei=Tadashi kn-aut-name=有岡匡 kn-aut-sei=有岡 kn-aut-mei=匡 aut-affil-num=5 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=6 ORCID= en-aut-name=MoriokaYasuki en-aut-sei=Morioka en-aut-mei=Yasuki kn-aut-name=森岡泰樹 kn-aut-sei=森岡 kn-aut-mei=泰樹 aut-affil-num=7 ORCID= en-aut-name=NiiyaHarutaka en-aut-sei=Niiya en-aut-mei=Harutaka kn-aut-name=新屋晴孝 kn-aut-sei=新屋 kn-aut-mei=晴孝 aut-affil-num=8 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=9 ORCID= en-aut-name=JojaIkuo en-aut-sei=Joja en-aut-mei=Ikuo kn-aut-name=上者郁夫 kn-aut-sei=上者 kn-aut-mei=郁夫 aut-affil-num=10 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=11 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=12 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=2 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=3 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=4 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=5 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=7 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=8 en-affil= kn-affil=岡山大学医学部附属病院放射線科 affil-num=9 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=10 en-affil= kn-affil=岡山大学医学部附属病院放射線科 affil-num=11 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=12 en-affil= kn-affil=岡山大学医学部附属病院放射線科 en-keyword=造影剤 (contorast media) kn-keyword=造影剤 (contorast media) en-keyword=硫酸バリウム (barium sulfate suspension) kn-keyword=硫酸バリウム (barium sulfate suspension) en-keyword=消化管検査 (barium examination) kn-keyword=消化管検査 (barium examination) END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue=1 article-no= start-page=43 end-page=48 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970910 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Views concerning nursing and nursing course of senior high school guidance teachers kn-title=進路指導を行う高校教師の看護職についての認識 en-subtitle= kn-subtitle= en-abstract=A previous study in Okayama prefecture in 1993 indicated the importance of high school teachers' influential rule on student's choice of nursing course. The same questionnaire survey was sent out by mail in 1996 to guidance teachers of 127 general high schools randomly selected from 617 schools in 10 prefectures, in and around Okayama. Data obtained from 64 teachers were analyzed and the results were as follows; 1. They suggested that shortage of nursing manpower was due to the harsh working conditions such as long and irregular hours (85.9%) and hard work (53.1 %), and also the low social esteem of nurse (32.8%). 2. The aspect of nursing noted by teachers were job specialty (73.4%) and devotion to people (53.l%). There were no statistical difference between these results and those of the previous study. 3. The teachers answered that the new four-year nuersing course (baccalaureate) currently being promoted from over the the present three-year course (associate degree) would be an incentive to students (79.8%) and might increase the number of students choosing to study nursing (57.8%). And they also noted that they would more readily recommend this course to students than before. These rates were significantly increased compared to the results of the previous report. kn-abstract=1993年に岡山県で行った先の研究で,高校生の看護課程の選択にあたって,進路指導を行っている教師の役割が大きい事を報告した｡今回は3年経った1996年に,同じ郵送調査を岡山県および周辺10県の普通科高校617校より無作為に選んだ127校において実施した｡64校より得られた回答を要約すると以下の通りであった｡1.教師が挙げた看護婦不足の理由はまず｢勤務時間が厳しい(85.9%)｣,｢仕事の内容が厳しい(53.1%)｣といった仕事のきつさで,次いで｢仕事の割には社会的評価が低い(32.8%)｣であった｡2.教師が学生に肯定的イメージとして看護課程を勧める理由は,｢まず専門職であること(73.4%)｣,次いで｢人に貢献できる喜び(53.1%)｣であった｡これらの結果は前回の結果と比較して統計的な有意差は認めなかった｡3.近年進められている3年制看護課程(準学士課程)から4年制課程(学士課程)への移行に関して,教師はこれらは学生の関心を呼ぶとし(79.8%),看護課程へ進学する者は増加するであろうとしている(57.8%)｡またこれまでよりこの課程への進学を教師は勧め易くなるとしている(56.3%)。これらの率は前回の結果と比較すると統計的に有意に高かった。 en-copyright= kn-copyright= en-aut-name=OhtaTakeo en-aut-sei=Ohta en-aut-mei=Takeo kn-aut-name=太田武夫 kn-aut-sei=太田 kn-aut-mei=武夫 aut-affil-num=1 ORCID= en-aut-name=ShimoishiYasuaki en-aut-sei=Shimoishi en-aut-mei=Yasuaki kn-aut-name=下石靖昭 kn-aut-sei=下石 kn-aut-mei=靖昭 aut-affil-num=2 ORCID= en-aut-name=KageyamaJingo en-aut-sei=Kageyama en-aut-mei=Jingo kn-aut-name=景山甚郷 kn-aut-sei=景山 kn-aut-mei=甚郷 aut-affil-num=3 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=4 ORCID= en-aut-name=TohgeHiroko en-aut-sei=Tohge en-aut-mei=Hiroko kn-aut-name=唐下博子 kn-aut-sei=唐下 kn-aut-mei=博子 aut-affil-num=5 ORCID= en-aut-name=EndoHiroshi en-aut-sei=Endo en-aut-mei=Hiroshi kn-aut-name=遠藤浩 kn-aut-sei=遠藤 kn-aut-mei=浩 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=2 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=3 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=4 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=5 en-affil= kn-affil=岡山大学医療技術短期大学部 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部 en-keyword=看護課程 (nursing course) kn-keyword=看護課程 (nursing course) en-keyword=看護 (nursing) kn-keyword=看護 (nursing) en-keyword=看護婦 kn-keyword=看護婦 en-keyword=高校教師 (high school teacher) kn-keyword=高校教師 (high school teacher) en-keyword=進路指導 kn-keyword=進路指導 en-keyword=high school student kn-keyword=high school student END start-ver=1.4 cd-journal=joma no-vol=9 cd-vols= no-issue=1 article-no= start-page=41 end-page=48 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980930 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Clinical evaluation of barium sulfate suspensions "Barytgen HD" - Second report - kn-title=混合粒子型硫酸バリウム｢バリトゲンHD｣の評価 ―第二報― en-subtitle= kn-subtitle= en-abstract=Barium sulfate suspensions in 200w/v% and 190w/v% had good stability. But in 180w/v% it had worse stability. Significant difference was not observed in coating, visualization of gastric margin and gastric area between in 200w/v% and 190w/v%. Barium sulfate suspensions in 190w/v% had less sticky coating of gastric mucosa and fewer bubbles than 200w/v%. Barium sulfate suspensions in 190w/v% was easiest density to drink. 190w/v% seems to be most adequate density in our study. kn-abstract=混合粒子型硫酸バリウム｢バリトゲンHD｣の懸濁液最適濃度について,検討を行った｡懸濁液安定性は,200w/v%と190w/v%は良好であったが,180w/v%は不良で臨床使用には不向きであると思われた｡臨床的評価において200w/v%と190w/v%は付着性,辺縁の描出能,胃小区描出能においては同程度であった｡200w/v%に多く見られた凝集･ムラ付き,気泡は,190w/v%では少なくなった｡飲み易さは,200w/v%,190w/v%とも飲み易いと評価されたが,190w/v%でより飲み易い傾向にあった｡バリトゲンHDの最適懸濁液濃度は,190w/v%であると思われる｡ en-copyright= kn-copyright= en-aut-name=NobuharaEitarou en-aut-sei=Nobuhara en-aut-mei=Eitarou kn-aut-name=延原栄太朗 kn-aut-sei=延原 kn-aut-mei=栄太朗 aut-affil-num=1 ORCID= en-aut-name=TakedaYoshihiro en-aut-sei=Takeda en-aut-mei=Yoshihiro kn-aut-name=竹田芳弘 kn-aut-sei=竹田 kn-aut-mei=芳弘 aut-affil-num=2 ORCID= en-aut-name=NiiyaHarutaka en-aut-sei=Niiya en-aut-mei=Harutaka kn-aut-name=新屋晴孝 kn-aut-sei=新屋 kn-aut-mei=晴孝 aut-affil-num=3 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=4 ORCID= en-aut-name=MoriokaYasuki en-aut-sei=Morioka en-aut-mei=Yasuki kn-aut-name=森岡泰樹 kn-aut-sei=森岡 kn-aut-mei=泰樹 aut-affil-num=5 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=6 ORCID= en-aut-name=JojaIkuo en-aut-sei=Joja en-aut-mei=Ikuo kn-aut-name=上者郁夫 kn-aut-sei=上者 kn-aut-mei=郁夫 aut-affil-num=7 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=8 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=2 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=3 en-affil= kn-affil=岡山大学医学部附属病院放射線科 affil-num=4 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=5 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=7 en-affil= kn-affil=岡山大学医学部附属病院放射線科 affil-num=8 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=9 en-affil= kn-affil=岡山大学医学部附属病院放射線科 en-keyword=造影剤 (contrast medium) kn-keyword=造影剤 (contrast medium) en-keyword=硫酸バリウム (barium sulfate suspension) kn-keyword=硫酸バリウム (barium sulfate suspension) en-keyword=消化管検査 (barium examination) kn-keyword=消化管検査 (barium examination) END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue=2 article-no= start-page=121 end-page=129 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=現像温度および時間のマンモフイルム特性に与える影響 kn-title=The Influence of Film Processing Temperature and Time on Mammographic film Characteristics en-subtitle= kn-subtitle= en-abstract=フィルム処理条件において,現像温度と処理時間に対する影響を4種類のマンモグラフィ用フィルムKonica New CM, Fuji UM-MA HC,Kodak Min-R M,迅速処理用Kodak EB/RAについて調べた｡そして,比較基準用として両面乳剤フィルムFuji UR-2を用いた｡感光計で露光したフィルムを現像温度28～36℃,処理時間45～210秒で処理した｡特性曲線から得られたフィルム特性（平均階調度,相対感度,カブリ濃度）を異なる現像温度,現像時間に対して評価した｡UR-2はほとんど影響を受けず,マンモグラフィ用フィルムは,カブリ濃度が上昇することなく,現像条件の影響を大きく受けた。New CM, UM-MA HC,Min-R Mは現像温度の上昇,処理時間の延長に伴い,平均階調度と相対感度は増加した｡しかし,New CM, UM-MA HCの36℃,210秒で増加は限度に達した｡EB/RAの平均階調度は一定で,相対感度は両面乳剤フイルムと同 様にわずかな増加であった｡これらの結果は,New CM, UM-MA HC, Min-R Mにおいて,処理条件を変化させることにより,被曝低減,コントラスト向上に貢献できる可能性を示唆していた｡ kn-abstract=The influence for developing temperature and processing time within film processing conditions was investigated using four mammographic films, Konica New CM, Fuji UM-MA HC, Kodak Min-R M and Kodak EB/RA (for rapid system). And Fuji UR-2, a double-emulsion film, was used as a control. Those sensitometric strips exposed by a sensitometer were processed in the different combinations of developing temperatures ranging from 28 to 36℃, processing times from 45 to 210 sec. Average gradient, relative speed and base plus fog obtained from the measured film characteristic curves were evaluated for the different developing temperatures and times. Fuji UR-2 was scarcely affected and mammographic films were greatly affected in the different combinations without an increase in base plus fog except EB/RA. In New CM, UM-MA HC and Min-R M, the average gradients and the relative speeds increased as the developing temperature was higher and the developing time was longer, but the increases were limit on the combination of 36℃ and 210 sec in New CM and UM-MA HC. In EB/RA, the average gradients were almost constant and the relative speeds increased slightly like the double-emulsion film. These results suggested that it would be possible to contribute to dose reduction and advancement of contrast in New CM, UM-MA HC and Min-R M by changing these processing parameters. en-copyright= kn-copyright= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name=丸山敏則 kn-aut-sei=丸山 kn-aut-mei=敏則 aut-affil-num=1 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=2 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=3 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=4 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=5 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=6 ORCID= en-aut-name=TakeuchiTomoyuki en-aut-sei=Takeuchi en-aut-mei=Tomoyuki kn-aut-name=竹内知行 kn-aut-sei=竹内 kn-aut-mei=知行 aut-affil-num=7 ORCID= en-aut-name=HondaMitsugi en-aut-sei=Honda en-aut-mei=Mitsugi kn-aut-name=本田貢 kn-aut-sei=本田 kn-aut-mei=貢 aut-affil-num=8 ORCID= en-aut-name=YoshidaAkira en-aut-sei=Yoshida en-aut-mei=Akira kn-aut-name=吉田彰 kn-aut-sei=吉田 kn-aut-mei=彰 aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=2 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=3 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=4 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=5 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=7 en-affil= kn-affil=岡山大学歯学部附属病院歯科放射線科 affil-num=8 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=9 en-affil= kn-affil=広島県立保健福祉短期大学放射線技術科学科 en-keyword=マンモグラフィ (Mammography) kn-keyword=マンモグラフィ (Mammography) en-keyword=現像処理パラメータ (Processing Parameter) kn-keyword=現像処理パラメータ (Processing Parameter) en-keyword=特性曲線 (Characteristic Curve) kn-keyword=特性曲線 (Characteristic Curve) en-keyword=平均階調度 (Average Gradient) kn-keyword=平均階調度 (Average Gradient) en-keyword=相対感度 (Relative Speed) kn-keyword=相対感度 (Relative Speed) END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue=2 article-no= start-page=113 end-page=119 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Examination of density and mixing ratio of barium preparations, using an originally created phantom kn-title=自作ファントムによる硫酸バリウム製剤の濃度及び混合比の検討 en-subtitle= kn-subtitle= en-abstract=A phantom copied designs of coins was created with alginate dental impression material to establish a objective, simple and easy method for deciding density of barium sulfate suspensions which are used for stomach X-ray examination as contrast media. As a result of examining proper density (PD) of two kind of barium preparations with this phantom, in case of BARITOP P and BARICON MEAL, PD were almost shown by the next equation : PD(W/V%)=0.75C+165(C meant content of BARICON MEAL (%)). As BARICON MEAL resulted in hight contrast, it was thought to be suitable for a close examination. Mixture of BARITOP P and BARICON MEAL was thought to be suited to a routine examination becouse of wide permissible level of density. This phantom would be able to apply to the test of balium preparations, X-ray TV systems, screen/film systems and so on. kn-abstract=胃Ⅹ線検査に造影剤として用いられる硫酸バリウム懸濁液の濃度を,簡便に,客観的に決定する目的で,歯科用アルギン酸塩印象材を用いて,コインの図柄を写しとったファントムを制作した｡これを使って二種類の硫酸バリウム製剤の適正濃度(PD)を調べた結果,BARITOP PとBARICON MEALを単体,若くは混合した場合には,おおよそ,PD(W/V%)=0.75C+165(ただし,CはBARICON MEALの混合比(%))となった｡また,BARICON MEALはコントラストが高く,精密検査に有利だと考えられ,BARITOP PとBARICON MEALを混合すると濃度の許容範囲が広がるため,通常の検査に都合がよいと考えられた｡更に,このファントムは簡便に作成することができ,しかも,硫酸バリウム懸濁 液との親和性も良いことから,硫酸バリウム製剤やⅩ線TV装置の評価,増感紙･フィルム系の評価等にも応用できると考えられた｡ en-copyright= kn-copyright= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=1 ORCID= en-aut-name=MiyaharaTomonori en-aut-sei=Miyahara en-aut-mei=Tomonori kn-aut-name=宮原智則 kn-aut-sei=宮原 kn-aut-mei=智則 aut-affil-num=2 ORCID= en-aut-name=SumiKazuyuki en-aut-sei=Sumi en-aut-mei=Kazuyuki kn-aut-name=鷲見和幸 kn-aut-sei=鷲見 kn-aut-mei=和幸 aut-affil-num=3 ORCID= en-aut-name=OkuraYasuhiko en-aut-sei=Okura en-aut-mei=Yasuhiko kn-aut-name=大倉保彦 kn-aut-sei=大倉 kn-aut-mei=保彦 aut-affil-num=4 ORCID= en-aut-name=MiyakeKoichi en-aut-sei=Miyake en-aut-mei=Koichi kn-aut-name=三宅浩一 kn-aut-sei=三宅 kn-aut-mei=浩一 aut-affil-num=5 ORCID= en-aut-name=OkudaKazuhiro en-aut-sei=Okuda en-aut-mei=Kazuhiro kn-aut-name=奥田和裕 kn-aut-sei=奥田 kn-aut-mei=和裕 aut-affil-num=6 ORCID= en-aut-name=TandaniNobuyoshi en-aut-sei=Tandani en-aut-mei=Nobuyoshi kn-aut-name=丹谷延義 kn-aut-sei=丹谷 kn-aut-mei=延義 aut-affil-num=7 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=8 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=9 ORCID= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name=丸山敏則 kn-aut-sei=丸山 kn-aut-mei=敏則 aut-affil-num=10 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=11 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=12 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=13 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=2 en-affil= kn-affil=（財）倉敷成人病センター放射線部 affil-num=3 en-affil= kn-affil=（財）倉敷成人病センター放射線部 affil-num=4 en-affil= kn-affil=（財）倉敷成人病センター放射線部 affil-num=5 en-affil= kn-affil=（財）倉敷成人病センター放射線部 affil-num=6 en-affil= kn-affil=（財）倉敷成人病センター放射線部 affil-num=7 en-affil= kn-affil=（財）倉敷成人病センター放射線部 affil-num=8 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=9 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=10 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=11 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=12 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=13 en-affil= kn-affil=岡山大学医学部放射線医学教室 en-keyword=造影剤 (contrast media) kn-keyword=造影剤 (contrast media) en-keyword=硫酸バリウム (barium sulfate suspension) kn-keyword=硫酸バリウム (barium sulfate suspension) en-keyword=胃X線検査 (X-ray examination of the stomach) kn-keyword=胃X線検査 (X-ray examination of the stomach) en-keyword=アルギン酸塩印象材 (alginate impression material) kn-keyword=アルギン酸塩印象材 (alginate impression material) en-keyword=ファントム (phantom) kn-keyword=ファントム (phantom) END start-ver=1.4 cd-journal=joma no-vol=9 cd-vols= no-issue=2 article-no= start-page=75 end-page=81 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990226 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Relative biological effectiveness (RBE) and potential leathal damage repair (PLDR) of heavy-ion beam kn-title=重粒子線の生物学的効果比と潜在性致死損傷からの回復 en-subtitle= kn-subtitle= en-abstract=Relative biological effectiveness (RBE) and repair of potential lethal damage (PLDR) of NIH3T3 cells against heavy-ion radiation were studied. RBE of 150 KV X-rays and neutron estimated from LD(10) dose of dose response survival curves compared to (60)Co γ-ray were 1.26 and 2.44, respectively. RBE of 13, 20, 50, 90, 140, 150, 153, 200 keV/μm of LET of carbon beam were 1.41, 1.47, 2.22, 2.61, 2.61, 1.61, 2.05 and 1.57, respectively. Potential lethal damage repair (PLDR) after exposure to carbon beam was observed. The magnitude of PLDR of (60)Co γ-ray was the biggest. As for the carbon beam of LET of 13 keV/μm as well, PLDR were observed. PLDR decreased when LET of carbon beam grew big. kn-abstract=150KV X線,中性子線及び炭素(LET13, 20, 50, 90, 140, 150, 153, 200keV/μm)を照射したマウスNIH3T3細胞の生存率曲線のLD(10)から(60)Coγ線に対する生物学的効果比(RBE)を求めた｡RBEは150KV X線では1.26,中性子線では2.44,炭素線(LET13, 20, 50, 90, 140, 150, 153, 200keV/μm)ではそれぞれ1.41, 1.47, 2.22, 2.61, 1.61, 2.05, 1.57であった｡LETとRBEの関係では100keV/μm付近にピークを認めた｡150KVX線のLETは13keV/μm,中性子線のLETは70keVμmに相当した｡(60)Co γ線の潜在性致死損傷からの回復(PLDR)は大きかった｡炭素線(13keV/μm)照射でもPLDRが観察されるがLETが大きくなるとPLDRは減少したが,LET90keV/μmの炭素線でもPLDRが認められた｡照射時の細胞状態の検討では増殖期の細胞の感受性は定常期細胞に比し僅かに高かった｡ en-copyright= kn-copyright= en-aut-name=KawasakiShoji en-aut-sei=Kawasaki en-aut-mei=Shoji kn-aut-name=川崎祥二 kn-aut-sei=川崎 kn-aut-mei=祥二 aut-affil-num=1 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=2 ORCID= en-aut-name=AsaumiJunichi en-aut-sei=Asaumi en-aut-mei=Junichi kn-aut-name=浅海淳一 kn-aut-sei=浅海 kn-aut-mei=淳一 aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=小松めぐみ kn-aut-sei=小松 kn-aut-mei=めぐみ aut-affil-num=4 ORCID= en-aut-name=KurodaMasahiro en-aut-sei=Kuroda en-aut-mei=Masahiro kn-aut-name=黒田昌宏 kn-aut-sei=黒田 kn-aut-mei=昌宏 aut-affil-num=5 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=6 ORCID= en-aut-name=FurusawaYoshiya en-aut-sei=Furusawa en-aut-mei=Yoshiya kn-aut-name=古澤佳也 kn-aut-sei=古澤 kn-aut-mei=佳也 aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=3 en-affil= kn-affil=岡山大学歯学部歯科放射線学講座 affil-num=4 en-affil= kn-affil=岡山大学医学部医学科放射線医学講座 affil-num=5 en-affil= kn-affil=岡山大学医学部医学科放射線医学講座 affil-num=6 en-affil= kn-affil=岡山大学医学部医学科放射線医学講座 affil-num=7 en-affil= kn-affil=放射線医学研究所宇宙粒子線研究グループ en-keyword=PLDR kn-keyword=PLDR en-keyword=RBE kn-keyword=RBE en-keyword=Heavy-lon Radiation kn-keyword=Heavy-lon Radiation en-keyword=NIH3T3 Cells kn-keyword=NIH3T3 Cells END start-ver=1.4 cd-journal=joma no-vol=12 cd-vols= no-issue=2 article-no= start-page=101 end-page=106 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=20020320 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=加温後のtsAF8細胞の細胞周期 kn-title=Cell cycle of tsAF8 after heating en-subtitle= kn-subtitle= en-abstract=tsAF8細胞は45℃の加温後34℃で培養すると温熱耐性が速やかに発現するが,加温後,制限温度である39.7℃で培養すると温熱耐性の発現が抑制される｡加温後の培養温度が細胞周期に影響し,その結果として温熱耐性発現に影響を与えている可能性があることから,今回,Propidium Iodide(PI)とbromodeoxyuridine(BrdU)でtsAF8細胞を二重染色し,フローサイトメトリーによって温熱耐性と細胞周期の関係の有無について調べた｡tsAF8細胞を45℃20分の加温後34℃で培養すると,6時間後にはG(1)期の細胞が減少し,12時間後にはG(2)/M期への蓄積が見られた｡しかし,加温後39.7℃で培養した場合には細胞周期の進行がほとんど見られなかった｡BrdU の取込みは,加温せずに39.7℃で培養した場合には活発に行われ,また,45℃20分加温後34℃で培養した場合には,6時間後にはBrdUの取り込みは65.1%まで回復した｡しかし,温熱耐性発現の抑制が観察される45℃20分加温後39.7℃で培養した場合には,BrdUの取込み量は6時間後に一時的に15.1%に回復するが,12時間後には取込み量はゼロとなった｡BrdUの取り込みが阻害されたのはstep-down heatingの現象による細胞生存率の減少が原因だと考えられたが,温熱耐性発現の抑制が観察される条件下では細胞周期の特定の時期への集積がなかったことから,温熱耐性と細胞周期との関係はtsAF8細胞においては見い出されなかった｡ kn-abstract=Thermotolerance in tsAF8 cells develops during incubation at 34℃ after heating at 45℃, while it is suppressed by the following incubation at a non-permissive temperature of 39.7℃ after the same heating. The incubation temperature after heating may affect the cell cycle and consequently thermotolerance. In the present study, a relationship between the thermotolerance and the cell cycle of tsAF8 was investigated. The cell cycle fractions and DNA synthesis were measured by flow cytometry using double staining with propidium iodide and bromodeoxyuridine. When the tsAF8 cells were heated at 45℃ for 20 min, and thereafter incubated at 34℃, bromodeoxyuridine uptake in the S phase cells (DNA synthesis) was recovered to 65.1% 6 h after the heating, and the cells showed gradual accumulation in the G(2)/M phase. When the cells were incubated at 39.7℃ after heating at 45℃ for 20 min, then showed inhibition of thermotolerance development, the DNA synthesis was recovered to 15.1% temporarily 6 h after the heating, but it became 0% after 12 h, and the cells did not remarkably accumulate in any phases of the cell cycle. This inhibition of DNA synthesis at 39.7℃ was considered to be the result of cell survival decreasing by a step-down heating. However, the relationship between the thermotolerance and the cell cycle was not found out in tsAF8 cells, because the cells did not accumulate in any phases of the cell cycle under the inhibitory condition of thermotolerance. en-copyright= kn-copyright= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=1 ORCID= en-aut-name=KawasakiShoji en-aut-sei=Kawasaki en-aut-mei=Shoji kn-aut-name=川崎祥二 kn-aut-sei=川崎 kn-aut-mei=祥二 aut-affil-num=2 ORCID= en-aut-name=KurodaMasahiro en-aut-sei=Kuroda en-aut-mei=Masahiro kn-aut-name=黒田昌宏 kn-aut-sei=黒田 kn-aut-mei=昌宏 aut-affil-num=3 ORCID= en-aut-name=AsaumiJun-ichi en-aut-sei=Asaumi en-aut-mei=Jun-ichi kn-aut-name=浅海淳一 kn-aut-sei=浅海 kn-aut-mei=淳一 aut-affil-num=4 ORCID= en-aut-name=KatoHirokazu en-aut-sei=Kato en-aut-mei=Hirokazu kn-aut-name=加藤博和 kn-aut-sei=加藤 kn-aut-mei=博和 aut-affil-num=5 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=3 en-affil= kn-affil=岡山大学医学部附属病院放射線科 affil-num=4 en-affil= kn-affil=岡山大学歯学部附属病院歯科放射線科 affil-num=5 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=6 en-affil= kn-affil=岡山大学医学部附属病院放射線科 en-keyword=thermotolerance (温熱耐性) kn-keyword=thermotolerance (温熱耐性) en-keyword=hyperthermia (ハイパーサーミア) kn-keyword=hyperthermia (ハイパーサーミア) en-keyword=tsAF8 kn-keyword=tsAF8 en-keyword=cell cycle (細胞周期) kn-keyword=cell cycle (細胞周期) END start-ver=1.4 cd-journal=joma no-vol=13 cd-vols= no-issue=2 article-no= start-page=77 end-page=82 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=20030320 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=A Study of Reconstruction of Magnetic Resonance Image kn-title=MRIにおける画像の再構成 en-subtitle= kn-subtitle= en-abstract=Magnetic resonance is an important modality for medical imaging, and advanced mathematical techniques are introduced into the reconstruction of images. Clearly understandable explanations of the reconstruction of the MR image and of the mathematical derivation process have not been presented in the texts. Reconstruction of MR image is presented using the complex function and its relevant Fourier coefficients. kn-abstract=磁気共鳴は医学におけるイメージングにおいて重要なモダリティーであり,高度な数学的手法が画像の再構成に取り入れられている｡画像再構成の数学的手法および画像再構成にいたるまでの数学的な過程を理解するこは,MRIを学ぶものにとって非常に重要であるが,成書において明確な説明はなされていない｡ここでは,MR画像の再構成法を,複素関数と複素フ-リェ係数を用いて導いたので報告する｡ en-copyright= kn-copyright= en-aut-name=KatoHirokazu en-aut-sei=Kato en-aut-mei=Hirokazu kn-aut-name=加藤博和 kn-aut-sei=加藤 kn-aut-mei=博和 aut-affil-num=1 ORCID= en-aut-name=HanamotoKatsumi en-aut-sei=Hanamoto en-aut-mei=Katsumi kn-aut-name=花元克巳 kn-aut-sei=花元 kn-aut-mei=克巳 aut-affil-num=2 ORCID= en-aut-name=KurodaMasahiro en-aut-sei=Kuroda en-aut-mei=Masahiro kn-aut-name=黒田昌宏 kn-aut-sei=黒田 kn-aut-mei=昌宏 aut-affil-num=3 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=4 ORCID= en-aut-name=KawasakiShoji en-aut-sei=Kawasaki en-aut-mei=Shoji kn-aut-name=川崎祥二 kn-aut-sei=川崎 kn-aut-mei=祥二 aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻医用放射線科学講座 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻医用放射線科学講座 affil-num=3 en-affil= kn-affil=岡山大学医学部付属病院 affil-num=4 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻医用放射線科学講座 affil-num=5 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻医用放射線科学講座 en-keyword=MRI kn-keyword=MRI en-keyword=フーリェ変換 (Fourier transform) kn-keyword=フーリェ変換 (Fourier transform) en-keyword=画像再構成 (Reconstruction) kn-keyword=画像再構成 (Reconstruction) en-keyword=周波数エンコード (Frequency encode) kn-keyword=周波数エンコード (Frequency encode) en-keyword=位相画像 (Phase image) kn-keyword=位相画像 (Phase image) END start-ver=1.4 cd-journal=joma no-vol=14 cd-vols= no-issue=1 article-no= start-page=15 end-page=22 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=20031225 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=A study on the scattering exposure dose in radiotherapy. kn-title=放射線治療時の治療患部外散乱被曝線量に関する研究 en-subtitle= kn-subtitle= en-abstract=In modern medicine, radiotherapy has proved indispensable in the treatment of cancer. However. radiation exposure is a health hazard. and is thus strictly regulated. In the past, incidental exposure was not considered to pose a considerable risk, and because radiotherapy was an effective treatment for cancer and because the possibility of the long-term survival was generally poor, the prevalence of radiation injury was thought to be low. In recent years, however, more patients are making complete recoveries, and it is believed that long-term survival is possible with future radiotherapy techniques. There is no threshold for the stochastic effects of radiation exposure, and thus such effects may be detected even at low levels. In the present study, we measured the radiation exposure due to scattered rays from the patient, incidental radiation levels in the radiotherapy room, and levels of neutron radiation. which is a problem when high-energy X-ray radiotherapy systems are used. The results showed that exposure due to scattered rays and incidental levels in the radiotherapy room cannot be dismissed. and that further investigation is warranted. As for neutron radiation, dosages were below those that are known to influence the human body, but regular measurement is necessary because it may induce radioactivity in otherwise benign equipment. In addition, a protective apron had no effect on the exposure due to scattered rays in the radiotherapy room. kn-abstract=現代の医療のなかで癌治療において不可欠な存在となった放射線治療｡一方,放射線被曝はたとえわずかであってもリスクが伴い,厳しく規制されている｡ただし医療被曝はこの限りになく,過去においては癌患者に放射線治療をおこなう際の患部以外の被曝についてはあまり問題視されなかった｡これには癌の治療という前提に加え,長期生存の可能性が低く,存命中に晩発障害が発生することが低いと考えられていたからである｡しかし,集学的治療が確立した今後の放射線治療においては完治する放射線治療患者が多くなり,治癒後の余命が長くなることが予測される｡放射線被曝による確率的影響は閾値がなく,影響は当然現れるであろう｡そこで,放射線治療をおこなう際の患者の散乱線被曝線量,治療室内散乱線量,さらに高エネルギー放射線発生装置を取り扱うときに問題となっている中性子を測定した｡その結果,測定線量は治療患部外被曝,室内散乱線量ともに無視できない量であることがわかった｡中性子については,人体に影響がある線量は検出されなかったが,中性子の存在は室内物品の放射化の可能性を示唆するもので定期的な測定管理が必要である｡また,Ⅹ線撮影室用の防護衣による散乱線被曝の低減効果は放射線治療室では無意味であった｡ en-copyright= kn-copyright= en-aut-name=KawabeAtsushi en-aut-sei=Kawabe en-aut-mei=Atsushi kn-aut-name=川辺睦 kn-aut-sei=川辺 kn-aut-mei=睦 aut-affil-num=1 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=2 ORCID= en-aut-name=KobashiKazuki en-aut-sei=Kobashi en-aut-mei=Kazuki kn-aut-name=小橋一輝 kn-aut-sei=小橋 kn-aut-mei=一輝 aut-affil-num=3 ORCID= en-aut-name=YasumuraNaoki en-aut-sei=Yasumura en-aut-mei=Naoki kn-aut-name=安村直樹 kn-aut-sei=安村 kn-aut-mei=直樹 aut-affil-num=4 ORCID= en-aut-name=YamashitaTakahiro en-aut-sei=Yamashita en-aut-mei=Takahiro kn-aut-name=山下剛央 kn-aut-sei=山下 kn-aut-mei=剛央 aut-affil-num=5 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=6 ORCID= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name=丸山敏則 kn-aut-sei=丸山 kn-aut-mei=敏則 aut-affil-num=7 ORCID= en-aut-name=ShibuyaKouichi en-aut-sei=Shibuya en-aut-mei=Kouichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=8 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院保健学研究科保健学専攻修士課程 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=3 en-affil= kn-affil=兵庫県立淡路病院 affil-num=4 en-affil= kn-affil=津山中央病院 affil-num=5 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻第一期生 affil-num=6 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=7 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=8 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=9 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 en-keyword=散乱線被曝 (Exposure of scattered rays) kn-keyword=散乱線被曝 (Exposure of scattered rays) en-keyword=中性子 (Neutron) kn-keyword=中性子 (Neutron) en-keyword=放射線治療 (Radiotherapy) kn-keyword=放射線治療 (Radiotherapy) en-keyword=確率的影響 (Stochastic effect) kn-keyword=確率的影響 (Stochastic effect) END start-ver=1.4 cd-journal=joma no-vol=14 cd-vols= no-issue=2 article-no= start-page=121 end-page=128 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=20040331 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Measurement of sampling time in MRI and reconstruction of MR image kn-title=MRIにおけるサンプリング時間の測定と画像の再構成 en-subtitle= kn-subtitle= en-abstract=Regarding the construction of k-space in MRI, it is necessary to extract the required data from the echo signals with the rate of sampling time. In order to measure the sampling time, a rectangular phantom was placed on the left side of the FOV in the body coil of an MRI equipment, and got analog signals in the sequence of spin echo. The sampling time was determined by comparing the measured signals with the Fourier coefficients obtained by transforming the step function which was similar to the profile of the FOV. The MRI MULTI-TEST PHANTOM was scanned, and the k-space was constructed with the extracted data from the echo signals with the rate of the determined sampling time. The MRI images of the MULTI-TEST PHANTOM were reconstructed by inverse-transforming the obtained k-space. kn-abstract=MRIにおいてk-spaceを構築するためにはエコー信号をサンプリング時間に従って採取する必要がある.このサンプリング時間を測定するために,FOV(field of view)の左半分にファントムを置くことにより階段関数となるスピン分布を生成した｡得られたエコー信号を,階段関数をフ-リェ変換したときに得られるフ-リェ係数と比較することによりサンプリング時間を求めた｡得られたサンプリング時間を用いて,MRI MULTI-TEST PHANTOMをMRI装置でスキャンすることにより得られたエコー信号をサンプリングしk-spaceを構築した。このk-spaceをフ-リェ逆変換することによりMRI MULTI-TEST PHANTOMの画像を再構成することができた。 en-copyright= kn-copyright= en-aut-name=KatoHirokazu en-aut-sei=Kato en-aut-mei=Hirokazu kn-aut-name=加藤博和 kn-aut-sei=加藤 kn-aut-mei=博和 aut-affil-num=1 ORCID= en-aut-name=HanamotoKatsumi en-aut-sei=Hanamoto en-aut-mei=Katsumi kn-aut-name=花元克巳 kn-aut-sei=花元 kn-aut-mei=克巳 aut-affil-num=2 ORCID= en-aut-name=KawasakiShoji en-aut-sei=Kawasaki en-aut-mei=Shoji kn-aut-name=川崎祥二 kn-aut-sei=川崎 kn-aut-mei=祥二 aut-affil-num=3 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=4 ORCID= en-aut-name=KurodaMasahiro en-aut-sei=Kuroda en-aut-mei=Masahiro kn-aut-name=黒田昌宏 kn-aut-sei=黒田 kn-aut-mei=昌宏 aut-affil-num=5 ORCID= en-aut-name=KoyamaTadashi en-aut-sei=Koyama en-aut-mei=Tadashi kn-aut-name=小山矩 kn-aut-sei=小山 kn-aut-mei=矩 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=3 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=4 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=5 en-affil= kn-affil=岡山大学医学部附属病院 affil-num=6 en-affil= kn-affil=広島県立保健福祉大学放射線学科 en-keyword=MRI kn-keyword=MRI en-keyword=フーリェ変換 (Fourier transform) kn-keyword=フーリェ変換 (Fourier transform) en-keyword=画像再構成 (reconstruction) kn-keyword=画像再構成 (reconstruction) en-keyword=サンプリング時間 (sampling time) kn-keyword=サンプリング時間 (sampling time) END start-ver=1.4 cd-journal=joma no-vol=107 cd-vols= no-issue=1-6 article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950630 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Contrast characteristics of barium preparations and the timing of exposure kn-title=胃X線検査用影剤のコントラスト特性と撮影タイミングについて en-subtitle= kn-subtitle= en-abstract= kn-abstract=We studied the relationship between the contrast characteristics of barium suspension and timing of exposure. We poured several kinds of barium preparations on the phantom manufactured by ourselves, and took X-ray pictures continuously by a DSA system. We analyzed each of the characteris-tics of the contrast. The time which was reguired for the contrast to reach the peak (Contrast Peak Time ; CPT) was unrelated with the kind of barium preparations used. It depended on the viscosity of the contrast media and the angle of the phantom. Viscosity was correlated with CPT. CPT was 3 to 6 seconds at an angle of 15 degrees, and 1.5 to 4 seconds at an angle of 30 degrees. We can refer to these findings to decide the density of barium suspension and to get timely exposure. en-copyright= kn-copyright= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=1 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=2 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=3 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=4 ORCID= en-aut-name=Kobashitakao en-aut-sei=Kobashi en-aut-mei=takao kn-aut-name=小橋高郎 kn-aut-sei=小橋 kn-aut-mei=高郎 aut-affil-num=5 ORCID= en-aut-name=OkuraYasuhiko en-aut-sei=Okura en-aut-mei=Yasuhiko kn-aut-name=大倉保彦 kn-aut-sei=大倉 kn-aut-mei=保彦 aut-affil-num=6 ORCID= en-aut-name=TandaniNobuyoshi en-aut-sei=Tandani en-aut-mei=Nobuyoshi kn-aut-name=丹谷延義 kn-aut-sei=丹谷 kn-aut-mei=延義 aut-affil-num=7 ORCID= en-aut-name=MikamiYasutaka en-aut-sei=Mikami en-aut-mei=Yasutaka kn-aut-name=三上泰隆 kn-aut-sei=三上 kn-aut-mei=泰隆 aut-affil-num=8 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学診療放射線技術学科 affil-num=2 en-affil= kn-affil=岡山大学医療技術短期大学診療放射線技術学科 affil-num=3 en-affil= kn-affil=岡山大学医療技術短期大学診療放射線技術学科 affil-num=4 en-affil= kn-affil=岡山大学医療技術短期大学診療放射線技術学科 affil-num=5 en-affil= kn-affil=(財)倉敷成人病センター放射線部 affil-num=6 en-affil= kn-affil=(財)倉敷成人病センター放射線部 affil-num=7 en-affil= kn-affil=(財)倉敷成人病センター放射線部 affil-num=8 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=9 en-affil= kn-affil=岡山大学医学部放射線医学教室 en-keyword=contrast medium kn-keyword=contrast medium en-keyword=barium sulfate kn-keyword=barium sulfate en-keyword=dencity kn-keyword=dencity en-keyword=viscosity kn-keyword=viscosity END start-ver=1.4 cd-journal=joma no-vol=5 cd-vols= no-issue= article-no= start-page=111 end-page=114 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=The contrast media containing soft drinks for X-ray examination of the stomach kn-title=清涼飲料入り胃X線検査用造影剤 en-subtitle= kn-subtitle= en-abstract=Barium sulfate suspensions are disliked to drink by many people. That is one of the obstacles to increse person who consult doctors and to have medical examinations smoothly. We mixed soft drinks into the suspensions to improve this problem. As a result they were popular among 72.1% people. We need to study about these suspensions further, adding the clinical matters. kn-abstract=胃検診の受診者を増やし、検査を円滑に行う上で、造影剤である硫酸バリウム懸濁液の飲みにくさが障害の一つとなっている。これを改善する試みとして、懸濁液に市販の粉末清涼飲料を混入し検討したところ72.1％の人から通常のものよりも飲みやすいという回答を得た。今後、臨床的な検討を加えながら、さらに創意工夫していく必要がある。 en-copyright= kn-copyright= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=1 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=2 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=3 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=4 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=5 ORCID= en-aut-name=OkuraYasuhiko en-aut-sei=Okura en-aut-mei=Yasuhiko kn-aut-name=大倉保彦 kn-aut-sei=大倉 kn-aut-mei=保彦 aut-affil-num=6 ORCID= en-aut-name=TandaniNobuyoshi en-aut-sei=Tandani en-aut-mei=Nobuyoshi kn-aut-name=丹谷延義 kn-aut-sei=丹谷 kn-aut-mei=延義 aut-affil-num=7 ORCID= en-aut-name=NobuharaEitaro en-aut-sei=Nobuhara en-aut-mei=Eitaro kn-aut-name=延原栄太朗 kn-aut-sei=延原 kn-aut-mei=栄太朗 aut-affil-num=8 ORCID= en-aut-name=MikamiYasutaka en-aut-sei=Mikami en-aut-mei=Yasutaka kn-aut-name=三上泰隆 kn-aut-sei=三上 kn-aut-mei=泰隆 aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=2 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=3 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=4 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=5 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=6 en-affil= kn-affil=(財)倉敷成人病センター放射線部 affil-num=7 en-affil= kn-affil=(財)倉敷成人病センター放射線部 affil-num=8 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=9 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 en-keyword=造影剤 (contrast media) kn-keyword=造影剤 (contrast media) en-keyword=硫酸バリウム製剤 (barium sulfate suspension) kn-keyword=硫酸バリウム製剤 (barium sulfate suspension) en-keyword=粘度 (viscosity) kn-keyword=粘度 (viscosity) en-keyword=飲みやすさ (easiness to drink) kn-keyword=飲みやすさ (easiness to drink) END start-ver=1.4 cd-journal=joma no-vol=4 cd-vols= no-issue= article-no= start-page=57 end-page=60 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19940131 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Estimation of balium preparations with high density and low viscosity kn-title=高濃度低粘性硫酸バリウム製剤の評価 en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper we compared the balium preparations having high density and low viscosity (BP-HDLV) with those currently in use. We adopted the stomaches of pigs and the new phantom manufactured by ourselves. We especialy noted the quality of the contrast. The results indicate that BP-HDLV do not always make high contrast. The contrast is related to fluidity besides density. The fluidity of BP-HDLV should be improved. In adition, it costs much to increase content of balium. Therefore, we can not find out positive significance to use these BP-HDLV. en-copyright= kn-copyright= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=1 ORCID= en-aut-name=KobashiTakao en-aut-sei=Kobashi en-aut-mei=Takao kn-aut-name=小橋高郎 kn-aut-sei=小橋 kn-aut-mei=高郎 aut-affil-num=2 ORCID= en-aut-name=OgasawaraMitsuo en-aut-sei=Ogasawara en-aut-mei=Mitsuo kn-aut-name=小笠原光男 kn-aut-sei=小笠原 kn-aut-mei=光男 aut-affil-num=3 ORCID= en-aut-name=TandaniNobuyoshi en-aut-sei=Tandani en-aut-mei=Nobuyoshi kn-aut-name=丹谷延義 kn-aut-sei=丹谷 kn-aut-mei=延義 aut-affil-num=4 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=5 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=6 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=2 en-affil= kn-affil=倉敷成人病センター放射線部 affil-num=3 en-affil= kn-affil=倉敷成人病センター放射線部 affil-num=4 en-affil= kn-affil=倉敷成人病センター放射線部 affil-num=5 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=7 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 en-keyword=contrast medium kn-keyword=contrast medium en-keyword=balium kn-keyword=balium en-keyword=density kn-keyword=density en-keyword=viscosity kn-keyword=viscosity en-keyword=fluidity kn-keyword=fluidity END start-ver=1.4 cd-journal=joma no-vol=7 cd-vols= no-issue=1 article-no= start-page=23 end-page=27 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960930 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Basic properies of beam flatness analyzer (THEBES 7000) kn-title=ビームフラットネスアナライザ（7000型 THEBES）の基礎的性能の検討 en-subtitle= kn-subtitle= en-abstract=Lrradiation, which is one of the effective therapies to Cancer, is required to be accurate within ±5% of the tolerable error of the total system. An accurate dose has to be irradiated accurately at a target volume. For that Quality Control of the irradiation equipment is cotinually important. As the measurement of Beam Flatness is an important item, it is obligated to be measured once a week. In this paper as we have an opportunity to use a Beam Flatness Analyzer sold on a corporation of medical instrument, we experiment about the difference of sensitivity of mutual Chamber which is its basic property, the reproducibility of the measured score, and the minimum value of measuralbe dose. We find that the difference in every item is so small that its data is very reliable in a daily use. kn-abstract=癌の有力な治療法の1つである放射線治療はシステム全体の許容誤差が±5％と、正確な治療が要求されている。正確な線量を正確な場所に照射されなければならない。そのためには日頃から照射装置のQuality Control が重要である。Beam平坦度の測定はその中でも、重要な項目で1／6月の測定頻度が勧告されている。今回、市販のBeam Flatness Analyzer (7000型 THEBES) を使用する機会を得たので、その基礎的性能であるChamber 相互の感度のちがい、測定値の再現性、識別可能な最小線量について実験を行った。各項目とも誤差が非常に少なく、日常の使用に際してそのデータは十分信頼できるものであることがわかった。 en-copyright= kn-copyright= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=1 ORCID= en-aut-name=OguriNobuhiro en-aut-sei=Oguri en-aut-mei=Nobuhiro kn-aut-name=小栗宣博 kn-aut-sei=小栗 kn-aut-mei=宣博 aut-affil-num=2 ORCID= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name=丸山敏則 kn-aut-sei=丸山 kn-aut-mei=敏則 aut-affil-num=3 ORCID= en-aut-name=OkawaYoshihiro en-aut-sei=Okawa en-aut-mei=Yoshihiro kn-aut-name=大川義弘 kn-aut-sei=大川 kn-aut-mei=義弘 aut-affil-num=4 ORCID= en-aut-name=WakasaHiroyuki en-aut-sei=Wakasa en-aut-mei=Hiroyuki kn-aut-name=若狭弘之 kn-aut-sei=若狭 kn-aut-mei=弘之 aut-affil-num=5 ORCID= en-aut-name=NagayaIsao en-aut-sei=Nagaya en-aut-mei=Isao kn-aut-name=永谷伊佐雄 kn-aut-sei=永谷 kn-aut-mei=伊佐雄 aut-affil-num=6 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=7 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=8 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=9 ORCID= en-aut-name=MikamiYasutaka en-aut-sei=Mikami en-aut-mei=Yasutaka kn-aut-name=三上泰隆 kn-aut-sei=三上 kn-aut-mei=泰隆 aut-affil-num=10 ORCID= en-aut-name=InamuraKeiji en-aut-sei=Inamura en-aut-mei=Keiji kn-aut-name=稲村圭司 kn-aut-sei=稲村 kn-aut-mei=圭司 aut-affil-num=11 ORCID= en-aut-name=MoriokaYasuki en-aut-sei=Morioka en-aut-mei=Yasuki kn-aut-name=森岡泰樹 kn-aut-sei=森岡 kn-aut-mei=泰樹 aut-affil-num=12 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=13 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=14 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=2 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=3 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=4 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=5 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=6 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=7 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=8 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=9 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=10 en-affil= kn-affil=三井病院放射線科 affil-num=11 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=12 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=13 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=14 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 en-keyword=放射線治療 (radiation therapy) kn-keyword=放射線治療 (radiation therapy) en-keyword=ビーム平坦度 (beam flatness) kn-keyword=ビーム平坦度 (beam flatness) en-keyword=性能評価 (valuation of property) kn-keyword=性能評価 (valuation of property) en-keyword=電子加速器 (electron accelerator) kn-keyword=電子加速器 (electron accelerator) END start-ver=1.4 cd-journal=joma no-vol=6 cd-vols= no-issue= article-no= start-page=15 end-page=21 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960229 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Clinical application of the contrast media containing soft drinks for the X-ray examination of the stomach kn-title=清涼飲料入り胃X線検査用造影剤の臨床応用 en-subtitle= kn-subtitle= en-abstract=Barium sulfate suspensions are disliked by many people. This is one of the obstacles to increase persons who consult doctors and to have medical examinations smoothly. We mixed soft drinks into the suspensions to improve this problem. As a result, they were popular among 64.2% people, there were not any clinical troubles that the suspensions did not stick to the mucous membrane of the stomach well, the peristalsis of the sotmach were promoted, and so on. These results suggest that the contrast media containing soft drinks is useful for the X-ray examinations of the stomach. kn-abstract=胃X線検査の被験者を増やし、検査を円滑に行う上で造影剤である硫酸バリウム懸濁液の飲みにくさが障害の一つとなっている。これを改善する目的で、懸濁液に市販の粉末清涼飲料を混入したところ、64.2％の人が通常のものよりも飲みやすいと答えた。臨床上も造影剤の付着が悪くなったり、胃の蠕動を促進する等の問題は生じず、有用であると考えられた。 en-copyright= kn-copyright= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=1 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=2 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=3 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=4 ORCID= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name=丸山敏則 kn-aut-sei=丸山 kn-aut-mei=敏則 aut-affil-num=5 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=6 ORCID= en-aut-name=OkuraYasuhiko en-aut-sei=Okura en-aut-mei=Yasuhiko kn-aut-name=大倉保彦 kn-aut-sei=大倉 kn-aut-mei=保彦 aut-affil-num=7 ORCID= en-aut-name=NatsukawaKoichi en-aut-sei=Natsukawa en-aut-mei=Koichi kn-aut-name=夏川浩一 kn-aut-sei=夏川 kn-aut-mei=浩一 aut-affil-num=8 ORCID= en-aut-name=TandaniNobuyoshi en-aut-sei=Tandani en-aut-mei=Nobuyoshi kn-aut-name=丹谷延義 kn-aut-sei=丹谷 kn-aut-mei=延義 aut-affil-num=9 ORCID= en-aut-name=NobuharaEitaro en-aut-sei=Nobuhara en-aut-mei=Eitaro kn-aut-name=延原栄太朗 kn-aut-sei=延原 kn-aut-mei=栄太朗 aut-affil-num=10 ORCID= en-aut-name=MoriokaYasuki en-aut-sei=Morioka en-aut-mei=Yasuki kn-aut-name=森岡泰樹 kn-aut-sei=森岡 kn-aut-mei=泰樹 aut-affil-num=11 ORCID= en-aut-name=TakedaYoshihiro en-aut-sei=Takeda en-aut-mei=Yoshihiro kn-aut-name=竹田芳弘 kn-aut-sei=竹田 kn-aut-mei=芳弘 aut-affil-num=12 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=13 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=2 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=3 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=4 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=5 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=7 en-affil= kn-affil=(財)倉敷成人病センター南くらしき病院放射線部 affil-num=8 en-affil= kn-affil=(財)倉敷成人病センター南くらしき病院放射線部 affil-num=9 en-affil= kn-affil=(財)倉敷成人病センター南くらしき病院放射線部 affil-num=10 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=11 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=12 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 affil-num=13 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 en-keyword=造影剤 (contrast media) kn-keyword=造影剤 (contrast media) en-keyword=硫酸バリウム (barium sulfate suspension) kn-keyword=硫酸バリウム (barium sulfate suspension) en-keyword=清涼飲料 (soft drinks) kn-keyword=清涼飲料 (soft drinks) en-keyword=消化管検査 (barium examination) kn-keyword=消化管検査 (barium examination) END start-ver=1.4 cd-journal=joma no-vol=6 cd-vols= no-issue= article-no= start-page=7 end-page=13 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960229 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Physical Properties of Screen-Film Systems - New System for Chest Radiography - kn-title=増感紙フィルム系の物理特性 ―胸部用新システム― en-subtitle= kn-subtitle= en-abstract=The new three screen-film systems, Kodack INSIGHT system HC/IT-1, Fuji AD system HG-M/UR-1, and Konica EX system XG-S/ES-C for chest radiography were evaluated. In addition, the conventional system Fuji HR-4/Super HR-S was measured for comparison with new systems. The evaluation method is as follows. The image quality characteristics, speed, contrast, resolution and granularity were measured. The sensitivity and contrast were determined by measuring the MTF (modulation transfer function) and NCTF (normalized contrast transfer function). The granularity was estimated by measuring the Wiener spectrum. The speed of the new systems were improved by 22% to 73%. The dinsities at the maximum gradient value were shifted to high density (2.0-2.7). However, they had 10% to 30% less resolution. The other hand, the granularities were improved by 21% to 37% at 1.0 density. These results suggested that the emphasis of new systems was put on improving the image quality of mediastinum region, maintaining performance of the conventional system. kn-abstract=胸部専用の新しい増感紙／フィルムシステムについて物理的画質特性を測定し、従来のシステムと比較を行った。測定した新システムは、日本コダックのインサイトシステムからHC/IT-1、富士メディカルシステムのADシステムからHG-M/UR-1、コニカのEXシステムからXG-S/ES-C である。従来のシステムとして富士メディカルシステムのHR-4/Super HR-S を使用した。その結果、新システムは22～73％感度は高く、特性曲線においては低濃度部を持ち上げ、最大コントラストは高濃度側にシフトしていた。空間周波数2cycles/mmで相対鮮鋭度を比較すると、新システムが10～30％程度の低下となっていた。ノイズは、濃度1.0で新システムが35～46％の減少となった。以上より、新システムは、縦隔部の濃度を上げ、粒状性の改善を重視した設計となっていることが分かった。 en-copyright= kn-copyright= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=1 ORCID= en-aut-name=YoshidaAkira en-aut-sei=Yoshida en-aut-mei=Akira kn-aut-name=吉田彰 kn-aut-sei=吉田 kn-aut-mei=彰 aut-affil-num=2 ORCID= en-aut-name=NakamuraNobue en-aut-sei=Nakamura en-aut-mei=Nobue kn-aut-name=中村伸枝 kn-aut-sei=中村 kn-aut-mei=伸枝 aut-affil-num=3 ORCID= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name=丸山敏則 kn-aut-sei=丸山 kn-aut-mei=敏則 aut-affil-num=4 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=5 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=6 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=7 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=8 ORCID= en-aut-name=HondaMitsugi en-aut-sei=Honda en-aut-mei=Mitsugi kn-aut-name=本田貢 kn-aut-sei=本田 kn-aut-mei=貢 aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=2 en-affil= kn-affil=広島県立保健福祉短期大学部放射線技術科学科 affil-num=3 en-affil= kn-affil=岡山大学歯学部附属病院歯科放射線科 affil-num=4 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=5 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=7 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=8 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科 affil-num=9 en-affil= kn-affil=岡山大学医学部附属病院中央放射線部 en-keyword=増感紙フィルム系 (screen-film system) kn-keyword=増感紙フィルム系 (screen-film system) en-keyword=物理特性 (physical properties) kn-keyword=物理特性 (physical properties) en-keyword=感度 (speed (film sensitivity)) kn-keyword=感度 (speed (film sensitivity)) en-keyword=コントラスト (contrast) kn-keyword=コントラスト (contrast) en-keyword=鮮鋭度 (resolution) kn-keyword=鮮鋭度 (resolution) en-keyword=粒状性 (granularity) kn-keyword=粒状性 (granularity) END start-ver=1.4 cd-journal=joma no-vol=10 cd-vols= no-issue=1 article-no= start-page=1 end-page=13 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19991220 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Rationalization of measures to protect the working environment in radiation controlled areas from the perspective of the relationship between surface and airborne contamination kn-title=放射線管理区域における作業環境測定の合理化の検討 ―表面汚染と空気汚染の関係に着目して― en-subtitle= kn-subtitle= en-abstract=In radiation controlled areas, measures have been taken to assess the radiation dose to workers, but these efforts are limited due to high labor and cost factors in extremely low dose radiation controlled areas. And so they have been expected to be rationalized. Therefore, we first reviewed the present conditions of these working environment measurement and elucidated the relationship between surface and airborne contamination in radiation controlled areas. Second, we reviewed the qualities of several surface contamination measurements such as smear test and possibilities for their improvement. As a result, we developed some future programs for rationalization of the working environment measurements, for example, an algorithm for selecting the proper surface contamination measurement for each measurement area based on the conditions specific to that area. kn-abstract=放射線管理区域において業務従事者の放射線防護が正確に実施されていることを確認するために放射性同位元素の環境測定が行われている。しかし，実際の測定においては，濃度が低いなど実測困難な場合が多いこと，多くの人手と経費を要していることから，より合理的な測定の実施ができないかということについての検討が期待されている。このため本総説では，まず大学などの放射線管理区域における作業環境測定方法の現状についてまとめた。次に，放射線管理区域の床，作業台などにおける放射性同位元素の表面汚染と空気汚染に着目し，汚染粒子の移行など表面汚染と空気汚染の関係機構について，また，スミア法や直接測定法などの各種表面汚染測定法の汚染採取効率などを指標とした特性とこれら測定法の改良の試みについてまとめた。さらに，実際の作業場所において，作業内容，換気，表面材料などが表面汚染と空気汚染の関係に及ぼす影響について，その検討例を紹介した。得られた知見をまとめるとともに，測定箇所・測定頻度の適性化やそれぞれの測定箇所に適した測定法の選定など作業環境測定の一層の合理化に向けて，今後どのような検討が必要なのかについて提案した。 en-copyright= kn-copyright= en-aut-name=YamaokaKiyonori en-aut-sei=Yamaoka en-aut-mei=Kiyonori kn-aut-name=山岡聖典 kn-aut-sei=山岡 kn-aut-mei=聖典 aut-affil-num=1 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=2 ORCID= en-aut-name=NagamatsuTomohiro en-aut-sei=Nagamatsu en-aut-mei=Tomohiro kn-aut-name=永松知洋 kn-aut-sei=永松 kn-aut-mei=知洋 aut-affil-num=3 ORCID= en-aut-name=KawasakiShoji en-aut-sei=Kawasaki en-aut-mei=Shoji kn-aut-name=川﨑祥二 kn-aut-sei=川﨑 kn-aut-mei=祥二 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=3 en-affil= kn-affil=岡山大学アイソトープ総合センター affil-num=4 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 en-keyword=放射線管理区域 (radiation controlled area) kn-keyword=放射線管理区域 (radiation controlled area) en-keyword=作業環境測定 (working environment measurement) kn-keyword=作業環境測定 (working environment measurement) en-keyword=表面汚染測定法 (surface contamination measurement) kn-keyword=表面汚染測定法 (surface contamination measurement) en-keyword=スミア法 (smear test) kn-keyword=スミア法 (smear test) en-keyword=採取効率 (collecting efficiency) kn-keyword=採取効率 (collecting efficiency) END start-ver=1.4 cd-journal=joma no-vol=10 cd-vols= no-issue=2 article-no= start-page=91 end-page=98 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=20000324 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=The influence of air attenuation in characteristic curve for mammographic screen-film system kn-title=マンモグラフィ用増感紙／フィルムシステムの特性曲線における空気減弱の影響 en-subtitle= kn-subtitle= en-abstract=It is necessary to take air attenuation into account when we use inverse square sensitometry to obtain characteristic curve for the mammographic screen-film system at low x-ray energies as used with the dedicated unit. Three kinds of the inverse square sensitometry approach of correcting by air attenuation obtained from effective energy, of correcting by exposure dosimetry and of using modified the technique of Bednarek were employed to investigated the influence of x-ray energy in the characteristic curves for the mammographic screen-film system. In addition, the inverse square sensitometry with the general radiographic unit was employed and the influence of x-ray high energy in the characteristic curves was also investigated for the same screeri-film system. Though characteristic curves and gradient curves of the new inverse square sensitometry were a little lower than the others in high-density region, the curves with three kinds of methods almost coincided. Maximum relative errors of average gradient and maximum gradient for modified the technique of Bednarek were found to be 2.7% and 0.2% among the others respectively. Moreover, maximum relative errors of gradient and maximum gradient for the inverse square sensitometry with the general radiographic unit were 2.7% and 1.5% among three kinds of methods with the dedicated unit respectively. It was considered that the characteristic curves for the mammographic screen-film　system were little influenced by x-ray energy and could be obtained only by correcting　air attenuation from above results. kn-abstract=マンモグラフィ専用装置を使用して，距離法で低エネルギー領域のX線におけるマンモグラフィ用増感紙／フィルムシステムの特性曲線を得るためには，空気滅弱の影響を考慮する必要がある。その影響について，実効エネルギーから空気減弱分を補正，照射線量測定による補正，Bednarek法を応用した新距離法の3種類の方法を使って検討した。さらに，一般撮影装置でも，マンモ用システムに対して距離法で特性曲線を作成し，エネルギ ーの変化による影響についても検討した。その結果，3方法の特性曲線およびグラディエント曲線は，新距離法が高濃度域でわずかにずれるもののほぼ一致した。新距離法に対する平均階調度，最大階調度の最大誤差は，2.7％，0.2％であり，一般撮影用装置の距離法と3方法との間では，一般撮影用装置の距離法に対して最大誤差は2.7％，1.5％であった。以上のことから，エネルギーの変化による特性曲線への影響はほとんどなく，低エネルギー領域での特性曲線は空気特配の補正を行うことのみで得られると考えられる。 en-copyright= kn-copyright= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name=丸山敏則 kn-aut-sei=丸山 kn-aut-mei=敏則 aut-affil-num=1 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=2 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=3 ORCID= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=4 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=渋谷光一 kn-aut-sei=渋谷 kn-aut-mei=光一 aut-affil-num=5 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=3 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=4 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=5 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=6 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 en-keyword=マンモグラフィ (mammography) kn-keyword=マンモグラフィ (mammography) en-keyword=低エネルギー領域 (low x-ray energy) kn-keyword=低エネルギー領域 (low x-ray energy) en-keyword=特性曲線 (characteristic curve) kn-keyword=特性曲線 (characteristic curve) en-keyword=距離法 (inverse square sensitometry) kn-keyword=距離法 (inverse square sensitometry) en-keyword=空気減弱 (air attenuation) kn-keyword=空気減弱 (air attenuation) END start-ver=1.4 cd-journal=joma no-vol=11 cd-vols= no-issue=1 article-no= start-page=35 end-page=39 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=20001116 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Approach on the simple and easy method for measurement of airborne radioactive iodine((125)I) kn-title=放射性ヨウ素（(125)I）の空気中濃度測定の簡便化に向けての基礎的検討 en-subtitle= kn-subtitle= en-abstract=Radioactive iodines (iodine-123, -125, -131) are used as the marker in vitro test, nuclear medicine and so on. It is necessary to handle them carefully, because radioactive iodines scatter easily. As air concentration limits of radioisotopes are very low levels, we should prepare the measurement technique using a large-volumed aspirator and large-scaled equipments. In this study, we examined the simple and easy method for the measurement of concentration of airborne radioactive iodines. We designed and manufactured the simple set of holder and charcoal filter connected to hypodermic syringe. The collecting efficiency of airborne iodine-125 by this system was 44.5%. In the case of that a liter of the air was filtered by this system connected to 50 mℓ syringe and counted the radioactivity for 30 minutes by the NaI(Tl) well-type scintillation counter, It is indicated that iodine-125 of air concentration limit can be measured. kn-abstract=放射性ヨウ素（(123)I，(125)I，(131)I）は飛散しやすいなどの特性があり，他の放射性核種に比べ慎重な取扱いが求められている。また，この核種の空気中濃度限度は非常に低く，濃度測定には大量の空気を吸引しなければならず，そのための装置も大掛かりとなる。このため，本研究では，活性炭ろ紙をホルダにセットし，これを注射器に取り付けた簡易な装置を考案・試作し，空気中の放射性ヨウ素濃度を簡便に測る方法について実験・検討した。その結果，まず放射性ヨウ素にNa(125)Iを用いた場合の捕集効率は44.5％であることが分かった。次に，50mℓ注射器を用いて1ℓの空気を吸引・ろ過し，Nal（Tl）ウェルタイプシンチレーションカウンタで30分間放射能を測定した場合，本装置では空気中濃度限度の2.12倍の濃度の(125)Iが測定可能であり，気体状ヨウ素の漏れを防いで捕集効率を94.3％以上に上げることができれば，空気中濃度限度まで測定可能であることが示された。このため，本法は簡便かつ安価に異常を検知する測定方法として利用できるのではないかと考えられた。 en-copyright= kn-copyright= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=1 ORCID= en-aut-name=YamaokaKiyonori en-aut-sei=Yamaoka en-aut-mei=Kiyonori kn-aut-name=山岡聖典 kn-aut-sei=山岡 kn-aut-mei=聖典 aut-affil-num=2 ORCID= en-aut-name=NagamatsuTomohiro en-aut-sei=Nagamatsu en-aut-mei=Tomohiro kn-aut-name=永松知洋 kn-aut-sei=永松 kn-aut-mei=知洋 aut-affil-num=3 ORCID= en-aut-name=KawasakiShoji en-aut-sei=Kawasaki en-aut-mei=Shoji kn-aut-name=川崎祥二 kn-aut-sei=川崎 kn-aut-mei=祥二 aut-affil-num=4 ORCID= en-aut-name=HirakiYoshio en-aut-sei=Hiraki en-aut-mei=Yoshio kn-aut-name=平木祥夫 kn-aut-sei=平木 kn-aut-mei=祥夫 aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=3 en-affil= kn-affil=岡山大学アイソトープ総合センター affil-num=4 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=5 en-affil= kn-affil=岡山大学医学部放射線医学講座 en-keyword=(125)I (radioactive iodine-125) kn-keyword=(125)I (radioactive iodine-125) en-keyword=空気中濃度限定 (air concentration limit) kn-keyword=空気中濃度限定 (air concentration limit) en-keyword=活性炭ろ紙 (charcoal filter) kn-keyword=活性炭ろ紙 (charcoal filter) END start-ver=1.4 cd-journal=joma no-vol=11 cd-vols= no-issue=2 article-no= start-page=59 end-page=64 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010324 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=A study of x-rays protection in a hip-joint radiography examination kn-title=股関節X線撮影時の女性生殖腺防護についての検討 en-subtitle= kn-subtitle= en-abstract=Usually in a hip-joint radiographic examination for the youth including children, the gonads should be well protected with an appropriate lead shield etc. Since the male gonads are in the outside of the body, if covered with a lead shield, the shield can protect them. However, in the case of the female, since the gonads of exist in a pelvic cavity, the lead shield is cut to a specific pattern so that it can protect the ovaries and the womb, and it is set on the abdomen during the radiographic exposure. Since the scattered radiation on an X-ray film can be removed with the grid, the image of a lead shield is obtained clearly, and the gonads seem to be protected completely. The shield can not protect the gonads of the female from the scattered radiation, though it protects them almost completely from the primary X-rays beam. Therefore, the gonads have radioactive contamination from scattered radiation. Then, in order to estimate the amount of scattered radiation under the lead shield, the dose under the shield was measured by using a phantom in this research, changing lead shield width, the tube-voltage, and the monitoring depth of a phantom. As a results, the dose under the lead shield was observed considerably and showed the peak at the depth of 3 or 4cm. Therefore, it was thought that a careful caution was required for obviating lead shield in clinical. kn-abstract=幼小児を含めた若年者の股関節X線撮影検査においては鉛板などで生殖腺を防護して行うのが通常である。男性の場合は生殖腺は体外に露出しているので，それを鉛板で包むようにすればある程度目的は達成される。しかし，女性の場合，生殖腺は骨盤腔内に存在するため，卵巣及び子宮を防護でき診断目的領域にかからないように鉛板を成形し，腹壁上に置いて撮影する。X斬写真上ではグリッドで散乱線を除去しているため，鉛板の陰影がくっきりと撮影され，生殖腺は完全に防護されているように見える。しかし，体内では散乱線によるかなりの被曝があるものと考えられる。そこで今回，鉛板下の散乱線量を鉛板幅及び電圧を変化させ，ファントム内各深さの散乱線量を測定した。その結果，鉛板下の散乱線量が相当量認められ，その量は深さ3～4cmでピークを形成した。鉛板幅による変化は幅が狭いほど線量は大きくなり，電圧による変化は60kVと80kVを比べると80kVの方が多くなった。これを鉛板なしの場合と比較すると，ファントム内意さが増すにしたがい増大した。したがって，臨床において鉛板がずれて再撮影をすることのないよう細心の注意が必要であると考えられた。 en-copyright= kn-copyright= en-aut-name=NakagiriYoshitada en-aut-sei=Nakagiri en-aut-mei=Yoshitada kn-aut-name=中桐義忠 kn-aut-sei=中桐 kn-aut-mei=義忠 aut-affil-num=1 ORCID= en-aut-name=MaruyamaToshinori en-aut-sei=Maruyama en-aut-mei=Toshinori kn-aut-name=丸山敏則 kn-aut-sei=丸山 kn-aut-mei=敏則 aut-affil-num=2 ORCID= en-aut-name=GotoSachiko en-aut-sei=Goto en-aut-mei=Sachiko kn-aut-name=後藤佐知子 kn-aut-sei=後藤 kn-aut-mei=佐知子 aut-affil-num=3 ORCID= en-aut-name=AzumaYoshiharu en-aut-sei=Azuma en-aut-mei=Yoshiharu kn-aut-name=東義晴 kn-aut-sei=東 kn-aut-mei=義晴 aut-affil-num=4 ORCID= en-aut-name=ShibuyaKoichi en-aut-sei=Shibuya en-aut-mei=Koichi kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=5 ORCID= en-aut-name=TamuraEri en-aut-sei=Tamura en-aut-mei=Eri kn-aut-name=田村恵里 kn-aut-sei=田村 kn-aut-mei=恵里 aut-affil-num=6 ORCID= en-aut-name=TanimotoEriko en-aut-sei=Tanimoto en-aut-mei=Eriko kn-aut-name=谷本江利子 kn-aut-sei=谷本 kn-aut-mei=江利子 aut-affil-num=7 ORCID= en-aut-name=ToriiFumiko en-aut-sei=Torii en-aut-mei=Fumiko kn-aut-name=鳥居史子 kn-aut-sei=鳥居 kn-aut-mei=史子 aut-affil-num=8 ORCID= en-aut-name=TakedaYoshihiro en-aut-sei=Takeda en-aut-mei=Yoshihiro kn-aut-name=竹田芳弘 kn-aut-sei=竹田 kn-aut-mei=芳弘 aut-affil-num=9 ORCID= en-aut-name=SugitaKatsuhiko en-aut-sei=Sugita en-aut-mei=Katsuhiko kn-aut-name=杉田勝彦 kn-aut-sei=杉田 kn-aut-mei=勝彦 aut-affil-num=10 ORCID= affil-num=1 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=2 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=3 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=4 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=5 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=6 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科　学生 affil-num=7 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科　学生 affil-num=8 en-affil= kn-affil=岡山大学医療技術短期大学部診療放射線技術学科　学生 affil-num=9 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 affil-num=10 en-affil= kn-affil=岡山大学医学部保健学科放射線技術科学専攻 en-keyword=股関節X線撮影 (Radiography Examination of Hip-joint) kn-keyword=股関節X線撮影 (Radiography Examination of Hip-joint) en-keyword=医療被爆 (Patient Dose) kn-keyword=医療被爆 (Patient Dose) en-keyword=X線測定 (Dosimetry) kn-keyword=X線測定 (Dosimetry) en-keyword=生殖腺防護 (X-rays Protection of the Gonads) kn-keyword=生殖腺防護 (X-rays Protection of the Gonads) END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010930 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=tsAF8細胞の温熱耐性抑制に於けるPKC阻害剤の効果 kn-title=Effects of PKC inhibitors on suppression of thermotolerance development in tsAF8 cells en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=澁谷光一 kn-aut-sei=澁谷 kn-aut-mei=光一 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END