In recent years, various imaging techniques have been introduced into medical fields for detecting of abnormalities such as cancer, shadows. Especially, HRCT.is one of the useful diagnosis systems because it provides high resolution images. In the field of abdominal CT images, it is very important to understand blood vessel structures of a patient before operation. On the other hand, temporal subtraction method attempt to remove normal structures in the CT images, so that abnormalities can be observed more clearly to the medical doctor. With the subtraction techniques, image warping is very important. In order to achieve a good performance, elastic matching technique is applied to temporal subtraction method. In this paper, we apply temporal subtraction method with elastic matching technique to abdominal CT images in order to detect the blood vessel region for analyzing the internal organ. In this method the temporal subtraction is applied between successive phases. The proposed technique is applied to three abdominal CT images and satisfactory results are achieved.
