1. Institute of Pure and Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, Japan
2. Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan
3. Department of Diagnostic Radiology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
4. Division of Functional Imaging, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Kashiwa, Chiba, Japan
5. Molecular Characterization Unit, Center for Sustainable Resource Research, RIKEN, Wako, Saitama, Japan