胸部間接撮影用Gradation蛍光板による基礎的濃度の測定部分の検討

概要

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About the gradation type screen which have been developed for multipurpose examinations for breast radiography and examples of clinical application are reported including the exposure conditions. The gradation type screen is proposed for use in finding the mediastinum disease, mainly mediastinal lung cancer, and is more fairly spread than the former type. On the breast radiography, we measured the basic density on center of film. Howevers, in case of the central part being compensated sensitivity as a gradation type-screen, basic density is different regarding lungs. If we miss setting the best density, it will cause a miss diagnosis because of the lack of data. We tried to find the measuring position where we can get comparatively easily the best density of the center and the right lung position, on diagnosis, by using the gradation type screen and rare earth element screen (CM=11).
公益社団法人日本放射線技術学会の論文
1985-07-01