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目的探讨MRV对不同时期脑静脉与静脉窦血栓形成(CVST)的诊断价值。方法分析15例CVST患者,同期行MRV和DSA检查,将3D CE-MRV及2D TOF-MRV与DSA进行对比,探讨MRV对不同时期CVST的诊断价值。结果在急性及亚急性期CVST,3D CE-MRV的诊断准确性优于2D TOF-MRV。对于慢性期CVST,两者评价的灵敏度、特异度分别是:69.44%、98.15%和100%、89.47%;两者评价CVST治疗后再通的灵敏度、特异度分别是:81.82%、71.88%和60.00%、100%。结论对急性及亚急性CVST,3D CE-MRV较2D TOF-MRV的诊断准确性高。对慢性期及再通后的CVST,宜同时行3D CE-MRV和2D TOF-MRV检查,结合原始图像及MIP图像综合评价,必要时行DSA检查。
Objective To investigate the diagnostic value of MRV for cerebral venous and sinus thrombosis (CVST) in different periods. Methods Fifteen patients with CVST were examined with MRV and DSA during the same period. The 3D CE-MRV and 2D TOF-MRV were compared with DSA to explore the diagnostic value of MRV for CVST in different periods. Results The diagnostic accuracy of CVST and 3D CE-MRV in acute and subacute stage was better than that of 2D TOF-MRV. The sensitivity and specificity of the two methods were 69.44%, 98.15% and 89.47% respectively for CVST. The sensitivity and specificity of the two methods were 81.82%, 71.88% and 60.00%, 100%. Conclusion The diagnosis of acute and subacute CVST and 3D CE-MRV is more accurate than 2D TOF-MRV. For chronic phase and recanalization of CVST, should be simultaneously 3D CE-MRV and 2D TOF-MRV examination, combined with the original image and MIP image evaluation, DSA if necessary.