Bulletin of Faculty of Health Sciences Okayama University Medical School
Published by Faculty of Health Sciences Okayama University Medical School

<Formerly known as>
岡山大学医療技術短期大学部紀要 (1巻-9巻)

CRTモニタの解像特性

竹内 知行 岡山大学歯学部附属病院歯科放射線科
吉田 彰 岡山大学医療技術短期大学部診療放射線技術学科
東 義晴 岡山大学医療技術短期大学部診療放射線技術学科
杉田 勝彦 岡山大学医療技術短期大学部診療放射線技術学科
中村 伸枝 岡山大学歯学部附属病院歯科放射線科
岸 幹二 岡山大学歯学部附属病院歯科放射線科
平木 祥夫 岡山大学医学部放射線医学教室
抄録
We have developed a new technique for measuring the modulation transfer function (MTF) of a cathode ray tube (CRT) monitor. The "nominal" MTF was measured by displaying a line image of a width of one pixel on the CRT monitor using the pattern generator. We also measured the effective pixel width. In order to obtain the "actual" MTF, the nominal MTF was divided by the sinc function which is the Fourier transform of the effective pixel width. The results indicate that the corrected MTF converges to the constant value as the effective pixel width is narrower. Thus, the actual MTFs were determined and compared in the horizontal direction for two CRT monitors.
キーワード
CRT Monitor
Resolution
Effective Pixel Width
Modulation Transfer Function (MTF)
ISSN
0917-4494
NCID
AN10355371