1. Department of Medical Imaging, St. Martin De Porres Hospital, Chiayi, Taiwan
2. Department of Information Management, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
3. Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei, Taiwan
4. Ministry of National Defense, 164 Boai Rd., Zhongzheng Dist., Taipei 100, Taiwan