大脑中动脉供血区缺血的MRI表现

The MR imaging of ischemia of middle cerebral artery

目的 提高大脑中动脉供血区缺血(IMCA)MRI影像学认识。方法 对37例IMCA的MRI特点、原因及随访进行分类、总结。结果 37例IMCA依据形态可分为二型:大范围型IMCA为31例(81％,31/37);小范围型6例(19％,6/31)。颈内动脉血栓形成和高脂高蛋白饮食史分别是这二类IMCA的最常见原因。结论 IMCA在形态上有特征性。小范围型IMCA可以是大范围型IMCA的先兆。

Purpose To improve the diagnosis of ischemia of middle cerebral artery (IMCA) . Methods The MR imaging, etiology and follow - up of 37 patients with IMCA were studied. Results The 37 IMCAs were divided into 2 types: large scale (31 cases) and small scale (6 cases) . Embolus of carotid artery and heavy diet of lipid and protein are the leading causes of the two kinds of IMCA respectively. Conclusion IMCA has characteristic distributions. The small scale IMCA may progressed to the large one.