1. Department of Radiology, Toho University Sakura Medical Center, Sakura, Chiba, Japan
2. Department of Diagnostic Pathology, Toho University Sakura Medical Center, Sakura, Chiba, Japan
3. Department of Orthopaedic Surgery, Toho University Sakura Medical Center, Sakura, Chiba, Japan
4. Division of Radiology, Toho University Sakura Medical Center, Sakura, Chiba, Japan