1. Department of Radiology, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, Japan
2. Department of Radiation Therapy Technology, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, Japan
3. Department of Radiological Technology, Tokushima University Hospital, 3-18-15 Kuramoto-cho, Tokushima, Japan