An aortic stent graft is frequently used to cure an abdominal aortic aneurysm(AAA).It is critical to accurately fit the size and shape of the stent graft to the target region on the aorta. Proper sizing and shaping require the measurement of the orthogonal diameter of the target region from medical images. The present study aimed to acquire an accurate three-dimensional(3D) reconstruction of the aorta to determine the shape fo the cross-sectional area where the stent graft would be implanted. A