Burkart D J, Johnson C D, Morton M J, Ehman R L
Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905.
Radiology. 1993 May;187(2):407-12. doi: 10.1148/radiology.187.2.8475282.
Thirty-one patients with portal venous hypertension underwent phase-contrast cine magnetic resonance (MR) angiography to validate the technique for assessment of main portal vein patency and blood flow direction. Correlative findings from Doppler ultrasonography, conventional angiography, and surgery were acquired in 30, 17, and 16 patients, respectively. Findings from MR angiography correlated well with those of the other methods for determining portal vein patency and flow direction. The main portal vein was patent in 29 patients and was thrombosed in two patients at MR angiography. With the use of a 40-mm slab projection acquisition that required 5 minutes, the splenic and superior mesenteric veins, as well as extensive varices (when present), were seen in the majority of cases. Phase-contrast cine MR angiography is an accurate method of rapidly assessing morphologic characteristics, patency, and flow direction of the portal venous system and thus is a useful method for evaluating the condition of patients with chronic liver disease.
31例门静脉高压患者接受了相位对比电影磁共振（MR）血管造影，以验证该技术在评估门静脉主干通畅情况和血流方向方面的有效性。分别在30例、17例和16例患者中获得了多普勒超声、传统血管造影和手术的相关结果。MR血管造影的结果与其他确定门静脉通畅情况和血流方向的方法的结果相关性良好。在MR血管造影中，29例患者的门静脉主干通畅，2例患者的门静脉主干血栓形成。使用需要5分钟的40毫米层面投影采集，大多数情况下可观察到脾静脉和肠系膜上静脉以及广泛的静脉曲张（如有）。相位对比电影MR血管造影是一种快速评估门静脉系统形态特征、通畅情况和血流方向的准确方法，因此也是评估慢性肝病患者病情的一种有用方法。
