1 Department of Radiology, Faculty of Medicine, Kagawa University, Kagawa, Japan.
2 Department of Radiology, Faculty of Medicine, Kagawa University, Kagawa, Japan. norikane.takashi.gv@kagawa-u.ac.jp.
3 Division of Hematology, Rheumatology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Kagawa University, Kagawa, Japan.