Kimme-Smith C, Bassett L W, Gold R H, Chow S
Department of Radiological Sciences, UCLA Medical Center 90024-6916.
Radiology. 1991 Feb;178(2):387-91. doi: 10.1148/radiology.178.2.1987598.
Four single-emulsion films introduced over the past 2 years--Du Pont Microvision, Fuji MiMa, Konica CM, and Eastman Kodak OM--were compared with Eastman Kodak OM SO-177 (Min-RE) film to evaluate their varying effects on mean glandular dose of reciprocity law failure due to prolonged exposure, delayed processing, and increased film darkening as a result of increased radiation exposure to improve penetration of glandular tissue. Exposures over 1.3 seconds led to increased radiation doses of 20%-30%. Delays in processing of 6 hours decreased processing speed by 11%-32% for all films except Du Pont Microvision. Optical density increases of 0.40 required 20%-30% more skin exposure for all five films. Optimal viewing densities were also evaluated and found to be different for each of the five films. Mammographers need to be aware of these differences in mammographic films to achieve maximum contrast at mammography.
在过去两年推出的四种单乳剂胶片——杜邦微视胶片、富士MiMa胶片、柯尼卡CM胶片和伊士曼柯达OM胶片——与伊士曼柯达OM SO-177（Min-RE）胶片进行了比较，以评估它们在长时间曝光、延迟显影以及因增加辐射曝光以改善腺体组织穿透性而导致胶片变黑增加的情况下，对互易律失效时平均腺体剂量的不同影响。超过1.3秒的曝光导致辐射剂量增加20% - 30%。除杜邦微视胶片外，所有胶片延迟6小时显影会使显影速度降低11% - 32%。所有五种胶片的光学密度增加0.40需要皮肤曝光增加20% - 30%。还评估了最佳观片密度，发现五种胶片各不相同。乳腺造影技师需要了解乳腺造影胶片中的这些差异，以便在乳腺摄影中获得最大对比度。
