Extracting alveolar structure of human lung tissue specimens based on surface skeleton representation from 3D micro-CT images. - Hiroyuki Ishimori; Yoshiki Kawata; Noboru Niki; Yoshihiro Nakaya; Hironobu Ohmatsu; Eisuke Matsui; Masashi Fujii; Noriyuki Moriyama (Computer-Aided Diagnosis, 2007)