2014 年 31 巻 2 号 p. vi-ix
Cancer is the leading cause of death in the world. In order to improve the survival rates against the cancers, early detection is essential. Recently, positron emission tomography/computed tomography (PET/CT) is being used for cancer screening in Japan and some Asian countries. However, it generates about 1000 slice images per scan; the computer‐aided diagnosis (CAD) is expected to keep the diagnostic accuracy. Our research group develops the CAD scheme for multimodality and multi‐organ using PET/CT images. This review article describes our progress and future works in the developments of CAD scheme using PET/CT images.