1. Department of Radiology, Ishinkai Yao General Hospital, Osaka, Japan
2. Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa, Japan
3. Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
4. Department of Medical Technology, Nakatsugawa Municipal General Hospital, Nakatsugawa, Gifu, Japan
5. Department of Radiology, Osaka City General Hospital, Osaka, Japan