1. From the Departments of Radiology (A.K., O.M., Y.Z., T.O., N.Y., K.K., D.I., K.Y., W.K., T.G.), Pathology (S.N., Y.S., K.H.), Gastroenterology (Taro Yamashita, Tatsuya Yamashita, S. Kaneko), and Quantum Medical Technology (S. Kobayashi), Kanazawa University Graduate School of Medical Science, 13-1 Takaramachi, Kanazawa 920-8641, Japan.