Po-Ting Chen1, Ko-Ping Chang1, Kao-Lang Liu2. 1. Departments of Medical Imaging (Chen, Liu) and Pathology (Chang), National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan. 2. Departments of Medical Imaging (Chen, Liu) and Pathology (Chang), National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan lkl@ntu.edu.tw.