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目的探讨磁共振T1高分辨力各向同性容积激发(THRIVE)多期动态增强扫描序列在评价门静脉栓塞中的临床价值。资料与方法对48例经病理或临床证实的门静脉栓塞患者(其中癌栓39例、血栓9例)采用常规MR平扫序列和THRIVE多期动态增强序列扫描,评价THRIVE多期动态增强扫描序列对门静脉栓子的显示及定性能力。结果结合常规MR平扫序列,THRIVE多期动态增强扫描对39例癌栓及9例血栓诊断均正确,其对门静脉栓子的定性准确性达100%。48例THRIVE多期动态增强扫描的原始资料经多平面重组(MPR)、最大密度投影(MIP)等方法重组后均能清晰显示门静脉栓子的形态、部位、栓塞程度及门静脉海绵样变、动静脉瘘等并发症情况。结论磁共振THRIVE多期动态增强扫描序列在评价门静脉栓塞中有重要的临床价值。
Objective To investigate the clinical value of multi-phase dynamic contrast-enhanced magnetic resonance (MR) T1 isokinetic plethysmography (THRIVE) in evaluating portal vein thrombosis. Materials and Methods 48 cases of pathologically or clinically confirmed patients with portal vein thrombosis (including 39 cases of thrombosis, 9 cases of thrombus) using conventional MR plain scan sequence and THRIVE multi-phase dynamic enhanced sequence scan evaluation of THRIVE multi-phase dynamic contrast-enhanced scan sequence pairs Portal vein emboli in the display and qualitative ability. Results Combined with conventional MR plain scan sequence, the diagnostic accuracy of THRIVE multi-phase dynamic contrast-enhanced tomography in 39 cases of thrombus and 9 cases of thrombus was correct, and the qualitative accuracy of portal vein embolization was 100%. 48 cases of THRIVE multi-phase dynamic contrast-enhanced scan can clearly show the morphology, location, embolism and portal vein sponge-like changes of portal vein after reorganization by multiplanar reconstruction (MPR) and maximum density projection (MIP) Venous fistula and other complications. Conclusion MRI multi-phase dynamic contrast-enhanced MRI scan has important clinical value in the evaluation of portal vein embolism.