Haus A G, Metz C E, Doi K, Bernstein J
Radiology. 1977 Aug;124(2):511-3. doi: 10.1148/124.2.511.
X-ray spectra incident on and transmitted through breast tissue were measured using a fresh whole excised breast. These spectra and corresponding radiographs show that hardening of the beam from a molybdenum-anoda x-ray tube by a 0.5-mm AI filter instead of the conventional 0.03-mm Mo filter allows shorter exposure times and reduces patient exposure. Acceptable image contrast is preserved in mammography of thick or dense breasts.
使用新鲜完整切除的乳房测量了入射和透过乳房组织的X射线光谱。这些光谱和相应的X光片表明，用0.5毫米铝滤过器而非传统的0.03毫米钼滤过器对钼靶X射线管发出的光束进行硬化处理，可缩短曝光时间并减少患者受照剂量。在对厚乳房或致密乳房进行乳腺摄影时，可保持可接受的图像对比度。
