[en] At present, non-invasive diagnostic procedure to cardiovascular system is strongly required. Computed tomography (CT) as non-invasive diagnostic method is somewhat limited. Motion artifacts due to respiration and cardiac beat deteriorates CT images. By the recent development of fast scanner we are now being able to obtain much better images. CT scan of chest became an indispensable diagnostic method in aortic aneurysm. CT is also effective to point out the nature of mass and relationship to cardiovascular system. Four cardiac chambers are determined on CT by the detecting interatrial and interventricular septi. The chamber enlargement, thickness of cardiac muscle, calcification of valves and thrombus in atrium are precisely evaluated by CT. (author)