[1] Hokkaido Univ, Grad Sch Med, Dept Diagnost Imaging, Kita 15,Nishi 7,Kita Ku, Sapporo, Hokkaido 0608638, Japan
[2] Okayama Univ, Fac Med, Dept Radiol Dent & Pharmaceut Sci, Kita Ku, Okayama, Japan
[3] Shinshu Univ Sch Med, Med Data Sci Course, Matsumoto, Nagano, Japan
[4] Tokyo Med & Dent Univ, Dept Diagnost Radiol, Bunkyo Ku, Tokyo, Japan
[5] Osaka Univ, Grad Sch Med, Dept Radiol, Suita, Osaka, Japan
[6] Kumamoto Univ, Grad Sch Med, Dept Diagnost Radiol, Chuo Ku, Kumamoto, Japan
[7] Nagoya Univ, Grad Sch Med, Dept Radiol, Showa Ku, Nagoya, Japan
[8] Osaka Metropolitan Univ, Grad Sch Med, Dept Artificial Intelligence, Abeno Ku, Osaka, Japan
[9] Univ Tokyo, Grad Sch Med, Dept Radiol, Bunkyo Ku, Tokyo, Japan
[10] Univ Tokyo, Fac Med, Bunkyo Ku, Tokyo, Japan
[11] Hiroshima Univ, Dept Diagnost Radiol, Minami Ku, Hiroshima, Japan
[12] Kyoto Univ, Grad Sch Med, Dept Diagnost Imaging & Nucl Med, Kyoto, Japan
[13] Kobe Univ, Grad Sch Med, Dept Radiol, Chuo Ku, Kobe, Japan
[14] Juntendo Univ, Grad Sch Med, Dept Radiol, Bunkyo Ku, Tokyo, Japan
[15] Keio Univ, Sch Med, Dept Radiol, Shinjuku Ku, Tokyo, Japan
[16] Hokkaido Univ Hosp, Dept Diagnost & Intervent Radiol, Kita Ku, Sapporo, Japan