1. Department of Radiology, Research Institute for Brain and Blood Vessels-Akita
2. Tohoku University Graduate School of Medicine
3. Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
4. Oarai Research Center, Chiyoda Technol Corporation
5. Department of Radiology, Sendai Kosei Hospital
6. Department of Radiology, University of Yamanashi Hospital
7. Department of Radiology, Kanto Medical Center NTT EC
8. Department of Radiological Technology, Toranomon Hospital
9. Department of Radiology, Hyogo College of Medicine Hospital
10. Department of Radiological Technology, Japanese Red Cross Kobe Hospital (Current address: Cardiovascular Research Foundation and Columbia University Medical Center)