目的 探讨对比剂增强MRA与MR 管壁成像技术联合应用在颅内动脉瘤诊 断中的优越性。方法 回顾性分析2014年 7月至2015年6月行3.0T HR-MRI多序列动 脉瘤管壁成像的患者50例，共65例动脉 瘤，其中21例颅内动脉瘤患者于检查前 后行DSA检查，与DSA做比较，评估CE-MRA 与MR-VWI对动脉瘤管腔形态学测量精准 度；再对动脉瘤增强前后进行诊断分析， 观察瘤壁情况以评估动脉瘤的不稳定性。 结果 (1)21例行DSA检查的动脉瘤最大径 均值为(12.35mm±8.57mm)，CE-MRA和MRVWI在颅内动脉瘤最大径测量上的结果与 在DSA上测量的结果无统计学意义，P值分 别为(0.181、0.118)。(2)65动脉瘤瘤体 平均最大径为(6.9mm±6.1mm)，动脉瘤管 壁增厚及瘤壁增强率为41.54(27/65)，瘤 壁强化情况与瘤体大小差异有统计学意义 (P=0.001)。且随着瘤体的增大，瘤壁强 化率呈增高趋势。结论 CE-MRA与MR-VWI 成像技术的联合应用不仅可以精准显示动 脉瘤管腔的形态学结构，也可以较传统的 MRA提供更多的瘤壁信息-如瘤壁的增厚强 化、附壁血栓等，对颅内动脉瘤管壁的不 稳定性判断具有重要意义。

Objective To analyze the value of CE-MRA with HRMR-VWI in the diagnosis of intracranial aneurysms. Methods Fifty patients with sixty-five intracranial aneurysms underwent 3.0T HR-MRI vessel wall imaging from July 2014 to June 2015, 21 patients underwent DSA examination. Using DSA as a comparison, The accuracy of CE-MRA and MR-VWI on the measurement of aneurysm morphology was evaluated, and the enhancement of aneurysm vessel wall was analyzed, To assess the stability of the aneurysm. Results (1) Using DSA as a comparison, the mean value of aneurysm diameters on CE-MRA and MR-VWI(12.35±8.57)mm showed no statistical difference respectively(P<0.05). (2) The mean value of long diameters of 65 arterial aneurysm were (6.9±6.1)mm.Thirty-one of 64 aneurysms showed a thick and enhanced wall. There was significant statistical difference between aneurysm size and wall enhancement (P=0.001),With the increase of the long diameter，the enhancement rate of aneurysm wall were increased. Conclusion The combination of CE-MRA, MR-VWI can not only show the morphological characteristics of the aneurysm, but can also show more information than MRA-such as the MR-VMI aneurysm wall enhancement and mural thrombosis, Such as tumor wall thickening enhancement, mural thrombus, etc. Which may evaluate the rupture risk of intracranial aneurysms.