随着CT的广泛应用,使脑血管病的诊断准确率有了很大的提高,进一步研究又发现部分脑血管病临床与CT检查不相符合,认识这些发现具有重要的临床意义,本文拟对此作一综述。一、病理生理在脑血管疾病的不同时期,脑组织可有不同的病理变化,如缺血、肿胀、变性、坏死、吸收、囊变等,当脑组织的损害尚未达到CT所能显示的形态学改变时,CT可不显示病灶而呈现“假阴性”或“模糊效应”,反之,CT虽显示病灶,但病灶损害的部位为脑功能上的“哑区”,或病灶较小,则临床无症状,体检亦不能发现相应的神经体征;或者虽有血管闭塞,但侧 With the extensive application of CT, the diagnostic accuracy of cerebrovascular disease has been greatly improved. Further study found that some of the clinical manifestations of cerebrovascular disease and CT examination do not meet, to recognize these findings have important clinical implications, This makes a summary. First, the pathophysiology at different stages of cerebrovascular disease, brain tissue may have different pathological changes, such as ischemia, swelling, degeneration, necrosis, absorption, cystic change, etc., when the damage to the brain has not yet reached the CT can display the morphology When the study was changed, CT showed “false negative” or “blur effect” without displaying the lesion. On the contrary, although the CT showed the lesion but the site of lesion lesion was the “dumb area” of brain function or the lesion was small, Symptoms, physical examination can not find the corresponding neurological signs; or although vascular occlusion, but the side