| 屏—片接触紧密程度与影像对比度关系的实验探讨 |
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| 引用本文： | 王昌元,孙向东.屏—片接触紧密程度与影像对比度关系的实验探讨[J].泰山医学院学报,2000,21(1):25-26. |
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| 作者姓名： | 王昌元 孙向东 |
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| 作者单位： | 泰山医学院放射系!山东泰安271000(王昌元，李月卿，孙勇)，泰安市技术监督局!山东泰安271000(孙向东)，济南铁路分局泰安铁路医院!山东泰安271000(王军) |
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| 摘 要： | 目的 通过实验，对医用暗盒中屏－片接触的紧密程度与Ｘ射线影像对比度关系进行探讨。方法 对金属矩形卡按不同的屏－片间隔进行Ｘ射线摄影，得到６张Ｘ射线照片，在显微密度计上对这６张金属矩形卡像进行扫描得到６条Ｘ射线照片的光学密度曲线，根据这６条曲线计算每张照片的对比度。结果 屏－片接触越紧密，光学对比度越大。结论 屏－片之间的紧密接触是保证Ｘ射线照片质量的重要因素之一。
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| 关 键 词： | 屏－片接触 光学对比度 X射线屏－片系统 |
An experimental investigation on the relation between the contact of screen-film and the contrast of X-ray |
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| WANG Chang yuan,LI Yue qing,SUN Xiang dong,SUN Yong,WANG Jun.An experimental investigation on the relation between the contact of screen-film and the contrast of X-ray[J].Journal of Taishan Medical College,2000,21(1):25-26. |
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| Authors: | WANG Chang yuan LI Yue qing SUN Xiang dong SUN Yong WANG Jun |
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| Abstract: | Objective: To study the relation between the contact of screen film and the contrast of X ray. Methods: 6 X ray films of a metalrectangular test card were obtained with different screen film interval, the contrast of films was calculated according to the curve of the films drawn by micro densitometer. Results: The tighter screen film contact, the higher contrast is. Conclusion: The films of high quality were obtained with small screen film interval. |
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| Keywords: | contact between screen and film optical contrast of X ray film Screen film system |
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