HR-MRI对颅内未破裂动脉瘤的风险评估价值分析

Risk Assessment Value of HR-MRI on Unruptured Intracranial Aneurysms

目的分析高分辨磁共振(HRMRI)对颅内未破裂动脉瘤(UIA)发生破裂的风险评估价值。方法将我院58例经DSA检查确诊为颅内动脉瘤(IA)患者作为研究对象,所有患者均进行HR-MRI检查且有完整HR-MRI多序列管壁成像资料,根据动脉瘤是否破裂分为破裂IA组和UIA组,根据HR-MRI成像资料判断瘤壁强化与否将其分为瘤壁强化组和瘤壁未强化组,分析破裂IA组和UIA组动脉瘤形态学特征以及瘤壁强化组和瘤壁未强化组动脉瘤形态学特征,探讨HR-MRI对UIA发生破裂的风险评估价值。结果破裂IA组动脉瘤强化率显著高于UIA组(P<0.05),破裂IA组各形态学特征与UIA组差异均无统计学意义(P>0.05),瘤壁强化组动脉瘤分布位置、瘤体长度、宽颈动脉瘤、AR与瘤壁未强化组差异均无统计学意义(P>0.05),子囊、SR与瘤壁未强化组差异有统计学意义(P<0.05)。结论HR-MRI成像结果显示UIA破裂风险与瘤壁强化具有相关性,而影响瘤壁强化的因素包括子囊和SR。

Objective To analyze the risk assessment value of high-resolution magnetic resonance imaging(HR-MRI)on rupture occurrence of unruptured intracranial aneurysm(UIA).Methods A total of 58 patients diagnosed as intracranial aneurysms(IA)by DSA in our hospital were set for the study.All patients were given HR-MRI and had complete HR-MRI multi-sequence wall imaging data.According to whether the aneurysm ruptured,the patients were divided into ruptured IA group and UIA group,and according to HR-MRI imaging data to determine tumor wall enhancement,they were divided into tumor wall enhancement group and tumor wall non-enhancement group.The morphological features of aneurysm were analyzed between ruptured IA group and UIA group and between tumor wall enhancement group and tumor wall non-enhancement group,and the risk assessment value of HR-MRI on rupture of UIA was explored.Results The enhancement rate of aneurysm in ruptured IA group was significantly higher than that in UIA group(P<0.05),and there were no significant differences in the morphological features between ruptured IA group and UIA group(P>0.05),and there were no significant differences in the distribution location of aneurysm,tumor length,wide-neck aneurysm and AR between tumor wall enhancement group and tumor wall non-enhancement group(P>0.05),and there were significant differences in the ascus and SR compared with those in tumor wall non-enhancement group(P<0.05).Conclusion HR-MRI imaging results show that the risk of UIA rupture is related to the enhancement of tumor wall,and the factors affecting the enhancement of tumor wall include ascus and SR.