Finn J P, Edelman R R, Jenkins R L, Lewis W D, Longmaid H E, Kane R A, Stokes K R, Mattle H P, Clouse M E
Department of Radiology, New England Deaconess Hospital, Boston, MA 02215.
Radiology. 1991 Apr;179(1):265-9. doi: 10.1148/radiology.179.1.2006289.
Thirty patients (mean age, 45 years) were evaluated with magnetic resonance (MR) angiography before liver transplantation to assess the accuracy of MR angiography. A series of breath-hold, two-dimensional images were acquired and subsequently processed to form three-dimensional projection angiograms. Graphic information on blood flow in the portal vein was acquired by using presaturation bolus tracking. Correlative duplex ultrasound (US) was performed in 28 patients, and surgical or autopsy correlation was available in all cases. MR angiography demonstrated patency of the portal vein in 26 (96%) of 27 patients, made possible the diagnosis of portal venous occlusion in three of three patients, depicted reversed portal flow in one patient, and provided clear delineation of the extent of varices and specific portosystemic collateral vessels. When duplex US was successful, there was full agreement with MR angiographic results in assessing portal vein patency and flow direction. All of the MR findings were corroborated at surgical exploration or autopsy. The authors conclude that MR angiography is very accurate in the portal system and is valuable in preoperative assessment for liver transplantation.
30例患者（平均年龄45岁）在肝移植前接受磁共振（MR）血管造影评估，以评价MR血管造影的准确性。采集了一系列屏气二维图像，随后进行处理以形成三维投影血管造影。通过使用预饱和团注追踪获取门静脉血流的图像信息。28例患者进行了相关的双功超声（US）检查，所有病例均有手术或尸检相关性。MR血管造影显示27例患者中有26例（96%）门静脉通畅，3例患者中的3例诊断为门静脉闭塞，1例患者显示门静脉血流逆转，并清晰描绘了静脉曲张的范围和特定的门体侧支血管。当双功超声检查成功时，在评估门静脉通畅性和血流方向方面与MR血管造影结果完全一致。所有MR检查结果在手术探查或尸检时均得到证实。作者得出结论，MR血管造影在门静脉系统中非常准确，对肝移植术前评估有重要价值。
