1. Department of Radiology, Inha University Hospital, Inha University School of Medicine, Incheon 400-711, Korea.
2. Department of Vascular Surgery, Inha University Hospital, Inha University School of Medicine, Incheon 400-711, Korea.
3. Department of Vascular and Endovascular Surgery, The Catholic University of Korea School of Medicine, Seoul 137-701, Korea.