Platt J F, Rubin J M, Ellis J H
Department of Radiology, University of Michigan Hospital, Ann Arbor 48109-0030, USA.
Radiology. 1995 Jul;196(1):95-8. doi: 10.1148/radiology.196.1.7784597.
To determine if portal vein thrombosis (PVT) is associated with changes in the hepatic artery resistive index (RI) at Doppler ultrasonography (US).
In 35 patients with findings suspicious for PVT, prospective hepatic artery RIs were obtained before angiographic proof of portal vein status. RIs were also obtained from 27 age-matched patients with liver disease (without PVT) and from eight patients with PVT (without occlusion).
Twenty-seven of the 35 patients had proved PVT and a significantly lower (P < .01) mean hepatic artery RI than did patients in any other group studied. Twelve of these 27 patients had RI values of .50 or less, while none of the patients in any other group studied had an RI value this low (specificity, 100%).
A reduction in hepatic artery RI accompanies PVT and may be a helpful secondary sign to determine this venous abnormality.
确定在多普勒超声检查（US）中门静脉血栓形成（PVT）是否与肝动脉阻力指数（RI）的变化相关。
对35例发现有PVT可疑表现的患者，在门静脉状态血管造影证实之前获取前瞻性肝动脉RI。还从27例年龄匹配的肝病患者（无PVT）和8例PVT患者（无闭塞）中获取RI。
35例患者中有27例证实有PVT，其平均肝动脉RI显著低于其他任何研究组的患者（P <.01）。这27例患者中有12例RI值为0.50或更低，而其他任何研究组的患者中均无如此低的RI值（特异性为100%）。
PVT伴有肝动脉RI降低，这可能是确定这种静脉异常的一个有用的次要征象。
