^○Katsuyuki Nakanishi, Mio Sakai, Noboru Maeda, Yasuhiro Nakaya, Junichiro Tanaka, Hidenari Hongyo, Yu Tanaka, Sawaka Yamada, Soya Oda (Department of Diagnostic & Interventional Radiology, Osaka International Cancer Institute)

^○Yuko Fukuda (Shikoku Medical Center for Children and Adults)