乳腺摄影中的吸收辐射剂量。

Absorbed radiation dose in mammography.

作者信息

Hammerstein G R, Miller D W, White D R, Masterson M E, Woodard H Q, Laughlin J S

出版信息

Radiology. 1979 Feb;130(2):485-91. doi: 10.1148/130.2.485.

DOI:10.1148/130.2.485

Abstract

Radiation dose from mammographic techniques was determined as a function of surface exposure, beam quality, and depth. Relative exposure vs. depth was measured in tissue-substitute materials by thermoluminescent dosimetry. The f-factors were calculated from elemental compositions of mastectomy specimens. Dose at depth depends on beam quality as well as exposure and tissue composition. Analysis of data from the ACS/NCI Screening Centers shows current average midbreast doses to be 25 times lower (film/screen) and 3 times lower (Xerox) than the 2 rads previously estimated. Quantitative risk indicators other than midbreast dose are also discussed.

摘要

乳腺摄影技术的辐射剂量是根据表面照射量、射线质和深度来确定的。通过热释光剂量测定法在组织替代材料中测量相对照射量与深度的关系。f因子是根据乳房切除标本的元素组成计算得出的。深度处的剂量取决于射线质、照射量和组织组成。对美国癌症协会/美国国立癌症研究所筛查中心的数据分析表明，目前乳房中部的平均剂量（屏-片系统）比之前估计的2拉德低25倍，（静电复印系统）低3倍。还讨论了除乳房中部剂量之外的其他定量风险指标。