Automated assessment of breast tissue density in non-contrast 3D CT images without image segmentation based on a deep CNN. - Xiangrong Zhou; Takuya Kano; Hiromi Koyasu; Shuo Li 001; Xinxin Zhou; Takeshi Hara; Masayuki Matsuo; Hiroshi Fujita 001 (Computer-Aided Diagnosis, 2017)