乳腺癌的发病率逐年增加。乳腺X射线摄影是探测乳腺癌的一种成熟而性价比高的影像学技术[1-2]。但是,常规乳腺X射线摄影(包括传统屏/片系统和全视野数字化摄影)有一定的局限性[3],尤其是对致密乳腺和经过手术或放疗后的乳腺,缺乏自然对比,难以显示某些病变[4]。针对常规乳腺X射线摄影的不足,出现了数字化乳腺断层合成X射线 The incidence of breast cancer increased year by year. Mammography is a mature and cost-effective imaging technique for detecting breast cancer [1-2]. However, conventional mammography (including traditional screen / film system and full-field digital photography) has some limitations [3], especially for dense breast and breast after surgery or radiotherapy, the lack of natural contrast, it is difficult to display a Some lesions [4]. For the lack of conventional mammography, there has been a digital breast tomosynthesis X-ray