高场强磁共振Willis环血管成像与脑血管疾病的关系分析

目的　探讨Willis环的解剖形态与脑血管疾病的关系。方法　利用 3D TOF MRA技术进行脑血管Willis环成像。结果　Willis环显示完整性为 5 4.9% ,Willis环属支的显示率为 10 0 % ,Willis环的主要变异类型为大脑前动脉左右不对称 ,大脑中动脉侧裂段起始点位置不恒定 ,胎生型大脑后动脉等。动脉瘤患者中脑血管变异者为 83 % ,脑血管畸形者中脑血管变异者占 12 % ,脑梗死及脑出血中脑血管变异者占 1.6%。结论　Willis环的形态变异较大 ,与脑动脉瘤关系密切。

To Analysis Relation 2.0 T-Magnatic Resonance Angiography of the Circle of Willis with Cerebrovascular Disease

Objective To discuss the circle of Willis's dissection appearance in relation to cerebrovascular disease. Methods Make use of 3D-TOF-MRA techniques proceed for imaging of the circle of Willis in brain. Results The circle of Willis diplay completely is 54.9%, the affiliated branches of the circle of Willis display 100%. Variation types of anterior cerebral artery is not bilateral symmetry . The branches origin of lateral fissure segment of middle cerebral artery is not identical. And viviparous type posterior cerebral artery may display. Variation of cerebrovascular in aneurysms is 83%, variation of cerebrovascular in cerebrovascular malformations occupy 12%, and cerebral infarctions and cerebral hemorrhages occupy 1.6%.Conclusion The circle of Willis appearance variation is bigger, is closely with brain aneurysm.