1. Department of Radiology, Shin-Oyama City Hospital, Oyama-shi 323-0827, Tochigi, Japan
2. Center for Medical Sciences, Faculty of Health Sciences, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Ibaraki, Japan
3. Department of Orthopedic Surgery, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Ibaraki, Japan
4. Department of Physical Therapy, Faculty of Health Sciences, Tsukuba International University, Tsuchiura 300-0051, Ibaraki, Japan
5. Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Ibaraki, Japan
6. Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Ibaraki, Japan
7. Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa 116-8551, Tokyo, Japan