CT诊断超急性期大脑中动脉供血区梗死的临床价值

目的探讨超急性期大脑中动脉供血区脑梗死的CT平扫的诊断价值。方法对53例临床最终诊断为大脑中动脉供血区超急性期脑梗死(HCI)的CT平扫征象进行回顾性分析。结果大脑中动脉供血区HCI的CT平扫表现有:大脑中动脉供血区密度减低(24/53)、梗死区灰白质境界模糊(14/53)、梗死区脑沟裂变浅或消失(29/53)、同侧大脑中动脉高密度征(11/53)。其中密度减低是脑梗死最直接和最重要的征象。结论HCI的CT平扫表现因血管闭塞的快慢、梗死面积的大小、部位、脑组织的病理变化及侧支循环的建立情况而不同,平扫征象结合临床资料有助于提高HCI的诊断率。

Application Value of CT Diagnosis in the Hyperacute Cerebral Infarction related to the Middle Cerebral Artery

Objective To evaluate the early diagnosis of CT plain scan in the hyperacute cerebral infarction(HCI) related to the middle cerebral artery(MCA).Methods 53 cases of HCI within 6 hours clinically confirmed were retrospectively analyzedi,ncluding clinical manifestations and CT findingsR.esults The early CT find-ings of HCI include the decreased density sign of the region supplied by MCA(24/53),the vague interface of the white and gray matter(14/53),the cerebral sulci being shallow or disappeared(29/53),ipsilateral hyperdense MCA sign(11/53).And the decreased density sign is the most direct and important CT finding.Conclusion The CT findings are different due to the speed of vascular occlusion,the area and size of infarction,the pathological change and compensatory circulation.The combination of CT findings and clinical data conduces to early diagnosis of HCI related to MCA.