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目的:比较SPECT与MRI检查短暂性脑缺血发作(TIA)后脑缺血改变的灵敏度。方法:随机取临床明确的诊断为TIA的患者38例,分别作头部SPECT及MRI检查,比较两组诊断TIA后脑缺血改变的阳性率。结果:应用SPECT诊断TIA后脑缺血改变的阳性率为97.4%,应用MRI诊断的阳性率为10.5%,有明显差别(P<0.01)。结论:SPECT在检查TIA后脑缺血改变的方面上优于MRI检查。
Objective: To compare the sensitivity of SPECT and MRI in detecting cerebral ischemia after transient ischemic attack (TIA). Methods: Thirty-eight patients with definite clinical diagnosis of TIA were randomly selected for SPECT and MRI examinations respectively. The positive rate of cerebral ischemia after the diagnosis of TIA was compared between the two groups. Results: The positive rate of ischemic brain injury after TIA was 97.4%. The positive rate of MRI diagnosis was 10.5% (P <0.01). Conclusions: SPECT is superior to MRI in examining changes in cerebral ischemia after TIA.