MRA 、IPVG及DUS在门静脉高压症血流动力学研究中的应用价值

目的 探讨磁共振血管造影（MRA）、间接门静脉造影（IPVG）、多普勒超声（DUS）在门静脉高压症血流动力学研究中的应用价值。方法 对38例肝硬变门静脉高压症患者进行MRA检查，检测门静脉系统解剖显像和血流量，分别与IPVG和DUS的结果进行比较。结果 MRA成像结果优于IPVG，能很好显示门静脉及其属支；对流速、流量的测定结果与DUS所测结果有正相关性。结论 MRA能较好显示门静脉系统解剖影像，并可测得流速、流量，应成为门静脉高压症血流动力学研究的首选方法。

Application of MRA,IPVG and DUS in Hemodynamics Evaluation for Portal Hypertension

Objective To evaluate the role of MRA, IPVG and DUS in the hemodynamics studies of portal hypertension. Methods Thirty-eight patients with portal hypertension were examined with Philips Gyroscan 1.0 Tesla MR imaging system. 3D-DCE MRA and 2D-PC MR were used for study of portal venous anatomy and its hemodynamics. The results were compared with those obtained from IPVG and DUS. Results 3D-DCE MRA could clearly display the anatomical imaging of portal venous system and its imaging quality was better than that of IPVG. The data of hemodynamics from 2D-PC MR including diameter, blood velocity and blood flow were closely correlated to those from DUS. Conclusion As a non-invasive technique, MRA can display the anatomy of portal venous system and measure its hemodynamics exactly. It should be applied as the first choice in hemodynamics evaluation for portal hypertension.