JaLCDOI 10.18926/15204
Title Alternative Characteristic of GAFCHROMIC XR TYPE T dosimetry film
FullText URL 014_1_023_029.pdf
Author Kubotsu, Mariko| Nakagiri, Yoshitada| Ujifuku, Ayako| Taniguchi, Yukiko| Hachiya, Miho| Azuma, Yoshiharu| Goto, Sachiko| Maruyama, Toshinori| Aoyama, Hideki| Tahara, Seiji| Inamura, Keiji| Watanabe, Toshimitsu| Sugita, Katsuhiko|
Abstract 医療の高度化に伴い,近年では長時間のⅩ線透視を行うInterventional Radiology(IVR)手技が頻繁に行われ,副作用としての難治性放射線皮膚障害例の報告が増加している。確定的影響である放射線皮膚障害はしきい値を超えると発症し,線量に依存して障害の程度が重篤となるため,患者被曝線量の測定が重要である。しかし,IVRでは照射部位が多彩で,焦点-皮膚間距離が不安定なため,その測定方法は確立されていない。本研究では,近年IVR等低エネルギー線量測定用フイルムとして開発されたCAFCHROMIC XR TYPE T について性能評価を行い,患者皮膚入射面の被曝線量測定への応用の可能性について検討した。その結果,線量特性,線質特性,ネット値の安定性に良好な特性を示し,臨床に使用可能であったので報告する。
Abstract Alternative In recent years, interventional radiology (IVR) using which uses prolomged fluoroscopy has been performed frequently in clinical radiology. Also, reports of radiation skin injuries whose symptoms occur after IVR has been also increasing. These symptoms will become worse if the radiation induced skin injuries are caused by doses which are above the designated threshold, and the grade of injuries are dependent on dose. Therefore, it is important that patient skin dose is measured correctly. But when perfoming IVR, irradiation is complex pricedure, and there is a measurement error with an unfixed source-to-skin distance. So. in this paper, characteristics of GAFCHROMIC XR TYPE T (which are film for low energy X-rays) are performed. Then, they are decided whether the application to the skin surface incidence dose measurement whoud be posible. From these results usefull data can be obtainned; for exanmpe film characteristics, energy factors and stability of sensivility.
Keywords 患者被爆線量 (Patient Exposure dose) GAFCHROMIC XR TYPE T Radiochromic film Interventional Radiology (IVR) 測定精度 (Radiation dosimetry)
Publication Title 岡山大学医学部保健学科紀要
Published Date 2003-12-25
Volume volume14
Issue issue1
Start Page 23
End Page 29
ISSN 1345-0948
language 日本語
File Version publisher
NAID 120002307331