患者，女性，18岁。跑步后突感剧烈头痛，呕吐。检查脑膜刺激征（+)，无肢 体瘫痪，临床诊断蛛网膜下腔出血。为确诊应首选的辅助检査是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32521' and id < 2583805 and id<>'2583805' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32521' and id > 2583805 and id<>'2583805' order by id asc limit 5