【摘要】 目的 评价临床病史对CT和MRI诊断早期中风准确性的影响。方法 回顾性分析临床怀疑的733例早期中风患者，其中CT平扫561例，MRI平扫409例，按CT和MRI检查申请单是否提供了中风病史将患者分为临床可疑组和非可疑组，计算CT和MRI对两组中风患者诊断的敏感性、特异性和准确率。结果 CT对临床可疑组诊断的敏感性(52.0%)显著大于非可疑组(38.1%)(P<0.01)，对临床可疑组与非可疑组诊断的特异性分别为95.4%和88.9%，无统计学意义(P>0.05)。MRI对临床可疑组与非可疑组诊断的敏感性分别为94.6%和93.6%，特异性分别为94.4%和97.5%，均无统计学意义(P>0.05)。结论 临床病史的提供可提高CT对诊断早期中风的敏感性，且不影响其特异性，而对MRI诊断早期中风的敏感性和特异性均无影响。

    关键词 中风 临床病史 计算机体层摄影术 磁共振成像

    Influence of clinical history on diagnosis of stroke with radiological techniques

    Wang Yi，Zhang Weiguo，Tang Zhaopu，et al.

    Department of Radiology，Research Institute

    of Surgery，Daping Hospital， The Third Military Medical University，Chongqing400042.

    【Abstract】 Objective To evaluate the effect of clinical history on the accuracy of stroke diagnosis using CT and MRI.Methods The records of733patients with a clinical suspicion of early stroke were reviewed.All individuˉals were examined by an unenhanced CT(561cases)or MRI scan(409cases).With the radiologyrequisition forms ......