Fang-Jy Su1, I-Li Lin2, Yuan-Horng Yan3, Chun-Lin Huang4. 1. Department of Internal Medicine, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan. 2. Department of Radiology, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan. 3. Department of Medical Research, Chiayi Christian Hospital, Chiayi, Taiwan. 4. Department of Radiology, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan Department of Radiology, China Medical University Hospital, Taichung, Taiwan.