螺旋CT门静脉血管造影的临床应用价值

目的 :评价螺旋CT门静脉血管造影 (CTP)的临床应用价值。材料和方法 :对 10 8例对疑有肝脏疾病的患者分别行最大强度投影 (MIP)和表面遮盖法 (SSD)CTP成像。结果 :MIPCTP能同时显示 4级以上门静脉分支和 2级以上的肝静脉分支。CTP能直观地评价门静脉和肝静脉的位置、管径、有无门静脉受侵或癌栓形成 ,了解门解脉高压侧支循环的分布范围和程度。CTP有助于经颈静脉肝内门腔静脉分流术 (TIPS)术前定位、Budd Chiari综合症的诊断和术后随访。SSDCTP立体感强 ,但不利于细微结构和癌栓的显示。结论 :CTP是门静脉和肝静脉无创性检查的可靠方法 ,有较高的临床应用价值。

The Clinical Application of Helical CT Portography

Purpose: To evaluate the clinical application of helical CT portography (CTP). Materials and Methods: The maximum intensity projection (MIP) and surface shade display (SSD) CTP images were performed in 108 cases suspected of hepatic diseases. Results: MIP CTP image could display more than 4 grade branches of portal veins and 2 grade branches of hepatic veins. CTP image could directly demonstrate the location and width of the portal and hepatic veins, detect the invasion and tumor thrombosis of portal vein, and it also could show the range of collateral circulation and estimate its degree. CTP ws useful in the preoperative planning of transjular intrahepatic portosystemic shunt, the diagnosis and follow up of Budd Chiari syndrome. SSD CTP image could provide higher three dimensional relationship, but it was difficult to display the small vessel structures and tumor thrombosis. Conclusion: As a noninvasive and reliable method, CTP can provide valuable information about the portal venous and hepatic venous system.