*Tetsuro Tamamoto^1,2, Mami Kita^1,3, Yukino Kanata^1,3, Hiroshi Yoshii^1,3, Tetsuya Nishikawa^1,3, Tadashi Matsuki^1,3 (1. Dept. of Medical Informatics, Nara Med. Univ. Hospital, 2. Dept. of Radiation Oncology, Nara Med. Univ., 3. Dev. of Information Promotion, Nara Med. Univ.)