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进行适当的检查是明确卒中的可能病理生理机理及选择适当疗法预防复发的关键。头部对比增强CT扫描于卒中后2～3周出现,MRI于6天开始发生,于7～30天达高峰。卒中后的最初几天,增强作用不应出现,但肿瘤或脓肿可出现。6周后复查MRI.卒中的增强作用应消失。CT或MRI扫描能区别出血性与缺血性卒中和梗塞部位。CT在卒中后的前3天中就能区别出血性与缺血性卒中,而MRI则不能。动脉瘤破裂5天内CT显示蛛网膜下腔出血的灵敏度为90％。缺血性卒中后24h后MRI检
Appropriate examination is to identify the possible pathophysiology of stroke and choose the appropriate treatment to prevent recurrence of the key. Contrast-enhanced CT scans of the head appear 2 to 3 weeks after stroke, with MRI starting at 6 days and reaching its peak at 7 to 30 days. In the first few days after stroke, augmentation should not occur but tumors or abscesses may occur. MRI is reviewed after 6 weeks. The enhancement of stroke should disappear. CT or MRI scans distinguish hemorrhagic and ischemic strokes and infarctions. CT distinguishes between hemorrhagic and ischemic strokes in the first 3 days after stroke, whereas MRI does not. Within 5 days of rupture of the aneurysm, CT showed subarachnoid hemorrhage with a sensitivity of 90%. MRI examination 24h after ischemic stroke