1. Department of Diagnostic Radiology, Kyung Hee University Medical Center, Seoul 130-702, Korea.
2. Department of Nuclear Medicine, Kyung Hee University Medical Center, Seoul 130-702, Korea.
3. Department of Pathology, Kyung Hee University Medical Center, Seoul 130-702, Korea.
4. Department of Diagnostic Radiology, Kang Dong Sacred Heart Hospital, Hallym University, Seoul 134-010, Korea.
5. Department of Cardiology, Kyung Hee University Medical Center, Seoul 130-702, Korea.