1. Department of Radiology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
2. Department of Radiology and Nuclear Medicine, University of Maryland Medical Center, Maryland, USA
3. Department of Medical Imaging and Intervention, Chang Gung Memoral Hospital, Linkou, Taiwan
4. Department of Radiology, Busan Paik Hospital, Inje University, Busan, Korea
5. Department of Radiology, Dongguk University Gyeongju Hospital, Gyeongsangbuk-do, Korea
6. Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
7. Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA