1. Department of Triglyceride Science, Graduate School of Medicine, Osaka University , 6-2-4, Furuedai, Suita, Osaka 565-0874 , Japan
2. Department of Radiology, National Hospital Organization Osaka National Hospital , 2-1-14, Hoenzaka, Chuo-ku, Osaka 540-0006 , Japan
3. Department of Functional Imaging and Artificial Intelligence, Kanazawa University , 13-1 Takara-machi, Kanazawa 920-8640, Ishikawa , Japan