目 的 探讨1.5T磁共振三维 可变反转角快速自旋回波（threedimensional sampling perfection with application-optimized contrasts u s i n g d i f f e r e n t f l i p a n g l e evolution, 3D-SPACE）序列在矢状窦旁 脑膜瘤术前评价中的价值。方法 收集35 例经手术病理证实的矢状窦旁脑膜瘤患 者，术前均行常规MRI、增强磁共振静脉 成像（magnetic resonance venography, CE-MRV）及3D-SPACE扫描，两名观察者对 矢状窦旁脑膜瘤进行分型同时观察侧支 循环显示情况。结果 以手术结果为金标 准，CE-MRV及3D SPACE对矢状窦旁脑膜瘤 分型的总准确率分别为80.0%、91.4%，3D SPACE分型准确率高于CE-MRV(P<0.05)。 CE-MRV与3D SPACE对侧支循环的正确显示 率分别为80.6%、82.5%(P>0.05)。结论 1.5T磁共振3D-SPACE能够提高矢状窦旁脑 膜瘤术前分型的准确率且较清晰显示侧支 循环情况，对于矢状窦旁脑膜瘤术前评估 具有重要意义。

Objective To evaluate the application value of 1.5T magnetic resonance threedimensional sampling perfection with application-optimized contrasts using different flip angle evolution (3D-SPACE) sequence in preoperative evaluation of parasagittal meningioma. Methods 35 patients with pathological-confirmed parasagittal meningioma were selected. All the patients underwent MRI, Contrast-enhanced magnetic resonance venography (CE-MRV) and 3D-SPACE scanning before operation. The typing and collateral circulation of parasagittal meningioma was observed by two observers. Results According to the golden standard by operation, the total accuracy of CE-MRV and 3D SPACE for parasagittal meningioma typing was 80.0% and 91.4%, respectively, and 3D SPACE was higher than CE-MRV (P<0.05). The correct display rates of collateral circulation by CE-MRV and 3D SPACE were 80.6% and 82.5% (P>0.05), respectively. Conclusion 1.5T MR 3D-SPACE can improve the accuracy of parasagittal meningiomas typing and clearly show the collateral circulation, which has important significance for preoperative evaluation of parasagittal meningioma.