Affiliation: | 1. Department of Radiology, Oita University Faculty of Medicine, Oita, Japan;2. Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, Oita, Japan;3. Department of Radiology, Oita Red-cross Hospital, Oita, Japan;4. Department of Surgery, Oita Red-cross Hospital, Oita, Japan |