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目的 研究老年人脑缺血性病变 (SICVD)的特点 ,分析SPECT脑局部血流灌注显像 (rCBF)对SICVD的诊断价值。方法 36例SICVD患者均接受rCBF及脑MRI(部分行MRA)检查 ,比较rCBF与MRI的检查结果。结果 ①与MRI相比 ,rCBF更敏感地显示大脑各叶皮质的缺血性病变 ,较好地显示基底节核团的病变 ,对小脑、脑干及皮层下白质、内、外囊病变显示不良。老年人颞叶缺血比较多见。②rCBF因可敏感地显示枕叶病变而对椎基底动脉系统缺血性病变 (VBID)有一定的诊断价值 ,与MRI结合 ,为VBID的诊断提供更多的客观依据。③部分患者存在缺血性病变区域的相应血管病变。结论 rCBF与MRI结合 ,可更全面反映SICVD
Objective To investigate the characteristics of cerebral ischemic lesions (SICVD) in the elderly and analyze the diagnostic value of SPECT brain perfusion imaging (rCBF) for SICVD. Methods Thirty-six patients with SICVD were examined by rCBF and brain MRI (partial MRA), and the results of rCBF and MRI were compared. Results ① Compared with MRI, rCBF showed more sensitive ischemic lesions of cerebral cortex and better displayed the lesions of basal ganglia. The rCBF showed poor lesions of white matter, inner brain and outer capsule of cerebellum, brain stem and cortex . Temporal lobe ischemia in the elderly more common. ② rCBF has certain diagnostic value for vertebrobasilar ischemic lesions (VBID) because it can show the occipital lobe lesions sensitively, and it can provide more objective evidence for the diagnosis of VBID. ③ some patients with ischemic lesions corresponding vascular lesions. Conclusion rCBF combined with MRI, can more fully reflect the SICVD