1. Medical Imaging Department, Buddhist Tzu Chi General Hospital, Taichung Branch, Taiwan, Republic of China.
2. Division of Nuclear Medicine, Chung Shan Medical University Hospital, Taiwan, Republic of China.
3. Graduate Institute of Radiological Science, Central Taiwan University of Science and Technology, Taiwan, Republic of China.
4. School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, Taiwan, Republic of China.