The Study of Hepatic Perfusion Disorders with Multi-Slice Spiral CT / 实用放射学杂志

ABSTRACT

Objective To evaluate the various patterns of hepatic perfusion disorders with multi-slice spiral CT and to emphasize the significance of recognition for them . Methods In a period of 1 year, the all CT images of 1568 patients received multi-slice spiral CT examination of upper abdomen were analyzed retrospectively. The CT findings, etiologies and mechanisms of different pattens of hepatic perfusion disorders were investigated. Results 103 cases were demonstrated to have hepatic perfusion disorders. 69 cases were associated with tumors and the other 34 cases were non-tumor associated. The etiologies of various hepatic perfusion disorders were classified as (1)arterioportal fistulae(41.7%), (2) portal venous inflow obstruction(23.3%), (3) inflammartory hyperemic changes(17.5%), (4) steal phenomenon by hypervascular tumors(6.8%), (5) hepatic venous outflow obstruction(4.9%), (6) aberrant hepatic blood supply (3.9%) and (7) uncertain causes(1.9%). There was significant correlation between the CT images of perfusion disorders in shape and distribution and the causes of them. Conclusion Multi-slice spiral CT provides a new effective technique for demonstrating and understanding various hepatic perfusion disorders. Familiarity with the spiral CT appearances of these perfusion disorders will result in more accurate evaluation for various pathologic or physiologic states reflected by them.