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一、腔隙的部位分布问题传统文献均认为腔隙梗塞位于大脑前、大脑中动脉的深穿支供血区,此深穿动脉的直径在200μm以下,腔隙灶最常见的部位为尾状核、壳核、苍白球、侧脑室周围白质、丘脑、胼胝体、桥脑基底部、内囊.大脑皮层、大脑脚、小脑、延髓、脊髓不发生腔隙梗塞,而没有明确这种选择性分布的原因.但是,近年来CT、mRI、病理报告除肯定深穿动脉供血区多发性以外,也发现了一些原来认为不可能发生部位的腔隙灶,如Miller经mRI扫描证实的纯运动性偏瘫(PMH)中,其腔隙灶1/3在大脑皮层;
First, the distribution of the site of the lacunar Conventional literature that the lacunar infarction is located in the front of the brain, the middle cerebral artery deep through the branch of blood supply, the depth of the artery diameter below 200μm, lacunar focus most common part of the caudate nucleus , The putamen, the globus pallidus, the periventricular white matter, the thalamus, the corpus callosum, the pontine base, the internal capsule.The cerebral cortex, cerebellar peduncle, cerebellum, medulla, spinal cord infarction without lacunar infarction, but did not clear this selective distribution However, in recent years, CT, mRI, pathology report in addition to affirming deep penetration of the arterial blood supply area, but also found that some of the original cavity that was not considered possible cavity sites, such as Miller mRI scan confirmed pure motor hemiplegia PMH), the cavity foci 1/3 in the cerebral cortex;