1. Division of Radiation Oncology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe City, Hyogo Prefecture, 650-0017, Japan
2. Department of Gynecology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe City, Hyogo Prefecture, 650-0017, Japan
3. Central Radiology Department, Kobe University, 7-5-2 Kusunokicho, Chuo-ku, Kobe City, Hyogo Prefecture, 650-0017, Japan
4. Department of Radiology, Dokkyo Medical University, 880 Kita-kobayashi, Mibumachi, Shimotsuga-gun, Tochigi Prefecture, 321-0293, Japan
5. Department of Anesthesia, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe City, Hyogo Prefecture, 650-0017, Japan
6. Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe City, Hyogo Prefecture, 650-0017, Japan