1. Department of Radiology, Inje University, Haeundae Paik Hospital, Busan 612-896, Korea.
2. Department of Pathology, Inje University, Haeundae Paik Hospital, Busan 612-896, Korea.
3. Department of Radiology, Inje University, Busan Paik Hospital, Busan 614-735, Korea.
4. Department of Radiology, Busan National University Hospital, Busan 602-739, Korea.
5. Department of Radiology, Dongguk University, Gyeongju Hospital, Gyeongju 780-350, Korea.