1. Division of Nuclear Medicine, Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
2. Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
3. Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
4. Department of Radiation Oncology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
5. Department of Hematology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea