1. Department of Radiology, Kaohsiung Veterans General Hospital, Taiwan, R.O.C
2. Department of Biomedical Engineering, I-Shou University, Taiwan, R.O.C
3. Department of Medical Imaging, Taipei City Hospital (Yangming Branch), Taiwan, R.O.C
4. Department of Medical Imaging and Radiological Sciences, College of Health Sciences, Kaohsiung Medical University, Taiwan, R.O.C