64-Multi-Slices Helical Computer Tomography Portography: A Preliminary Clinical Application

Multi-slice helical CT (MSCT) was applied in clinic in 1998. MSCT portography (MSCTP) is a technique with contrast medium was administration through body surface vein in a breathhold condition as well as three-dimensional image reconstruction by computer to display the target vessel structures. This technique has many advantages, such as easy performance, economy and utility. MSCTP can display the anatomy and variation of the target vessel accurately, especially the relationship between the target vessel and adjacent tissue from multiple point of view, which is of great clinical value.With the development of the hepatic surgery, liver transplantation and interventional therapy, the detail information is needed to clarify the relationship between the hepatic neoplasm and the portal vein and the situation of consequent encroachment of the portal vein system. Hepatocellular carcinoma (HCC) is a common and frequent malignant tumor which develops quickly and easy to metastate, and the prognosis is poor. The middle life span is about 4 months in patients without theraphy. The encroachment of the portal vein system is one of the most important factor which has direct influence on prognosis. Therefore, it is very important to know the location and the degree of portal vein system encroachment for hepatic...