下肢深静脉血栓MRI分型与介入溶栓疗效相关性研究

目的探讨下肢深静脉血栓MRl分型与介入溶栓疗效相关性研究。方法对我院2009-2011年30例下肢深静脉血栓形成的惠者分别进行了MRI和DSA检查，MRA采用直接血栓成像术、弥散加权成像（DWI）、动态增强MRV，确定急性、亚急性、慢性的血栓分期，并尽量于48小时内进行DSA髂静脉的腔内接触性介入溶栓治疗。然后对MRI与DSA图像进行回顾对照分析。结果以DSA为标准：14例MRI诊断为急性期血栓，介入溶栓完全再通率为l00％：11例MRI诊断为亚急性期血栓，介入溶栓完全复通率为63．6％：5例MRI诊断为慢性期血栓，介入溶栓完全复通率为12．5％。结论MRI诊断下肢深静脉血栓的分期与介入溶栓疗效有正相关性关系，可指导临床对治疗方法的选择提供理论依据，并作为溶栓量化的指标之一，能最大限度消除溶栓的盲目性。

Correlation of MRI Classification and Interventional Thrombolytic Efficacy in DVT

Objective TO study the correlation on MRI classification of lower extremity deep vein thrombosis （DVT） and interventional thrombolytic efficacy. Method 30 pa- tients with DVT were examined by both MRI and DSA respectively in 2009-2011 of our hospital, MRA was done with director thrombus imaging （MRDTI）, diffusion-weighted imaging （DWI） and dynamic contrast enhanced MRV（DEC MRVlto determine the acute, subacute and chronic phase of thrombns. DSA-guided touched interventional thrombolysis technique in iliac vein were perlformed less than 48 hours. Then retrospective and compara- tive analysis was performed on MRI and DSA images. Results To contrast with DSA results, the patency rate in the interventional thrombolysis of 14 cases with acute DVT diagnosed by MRI was 100%. The patency rate of 11 subacute cases was 63.6%. While the patency rate of 5 chronic cases was 12.5%. Conclusions Correspondence between MRI classification of DVT and interventional thrombolytic efficacy as the theoretical basis can guide clinical selection of therapeutic methods. It also can avoid the blindness of throm- bolysis in maximum as a quantitative index.