Dudson J
Department of Medical Physics, Austin Hospital, Heidelberg, Victoria, Australia.
Australas Phys Eng Sci Med. 1994 Dec;17(4):211-6.
A recently introduced Agfa film-screen combination used for mammography was compared with a widely used Kodak film-screen combination. This comparison involved evaluating the image quality and calculating a reference mean glandular dose for a breast phantom recommended by the ACPSEM. The image quality and dose were evaluated for a grid and non-grid technique as well as a range of kilovoltages. For the large area test objects in the phantom, the Agfa combination performed better. This reflected the high contrast capability of this film-screen combination. For the Kodak combination a better image score was achieved for the small area objects. These objects are indicative of the modulation transfer function and resolution characteristics of the film-screen combination. The reference mean glandular dose showed that at least 20% less dose was required for the Agfa combination. Although the Agfa combination offered improved contrast and dose saving, the Kodak combination was preferred because of the better representation of the small area objects which are an important element for early detection of breast cancer.
将一种最近推出的用于乳腺摄影的爱克发屏片组合与一种广泛使用的柯达屏片组合进行了比较。这种比较包括评估图像质量，并为澳大利亚物理与工程医学学会（ACPSEM）推荐的乳腺模型计算参考平均腺体剂量。针对有格栅和无格栅技术以及一系列千伏值评估了图像质量和剂量。对于模型中的大面积测试物体，爱克发组合表现更好。这反映了这种屏片组合的高对比度能力。对于柯达组合，小面积物体获得了更好的图像评分。这些物体体现了屏片组合的调制传递函数和分辨率特性。参考平均腺体剂量表明，爱克发组合所需剂量至少少20%。尽管爱克发组合提供了更好的对比度并节省了剂量，但柯达组合更受青睐，因为它能更好地呈现小面积物体，而小面积物体是早期乳腺癌检测的重要因素。
