The Clinical Application Of Hepatic Vessels With Multi-slice Spiral Computed Tomography Angiography

Objective: To discuss the feasibility of tri-phase angiography of the liver with different post processing modes of the multi-slice spiral computed tomography (MSCT). Materials and Methods: 97 cases were performed tri-phase enhanced MSCT of whole hepatic region. Delay time :hepatic artery phase: 19-23s, portal vein phase :50-60s , hepatic vein phase:70-90s. Slice thickness. 2.5mm, interval: 1.25-2.5mm. All cases were post processing with maximum intensity projection (MIP), volume rendering (VR). 21 of the patients underwent DSA examination at the same time. Results: During hepatic arterial phase, the abdominal aorta, the celiac artery and its branches were well shown. The hepatic artery could be visualized at the 2 grade branches with MIP and VR and more than 3 grade branches with DSA. The portal vein and hepatic vein were exhibited more than 3 grade branches with MIP and VR. The two techniques were no significant difference (P>0.05). MIP showed the hepatic vessels three-dimensional, and VR showed them more clearly and steroid. Conclusion: The small branches of hepatic artery, hepatic vein and portal veins were markedly showed during the tri-phase scanning They had high clinical value. MIP and VP were the better reconstruct ional techniques when they were connected with each other.