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目的 探讨局部脑血 流减少与血管因素间的相关关系和寻找TIA的有效诊断方法。方法对TIA病人进行SPECT%,TCD%、CCDS的检查,将其结果进行相关分析。结果 SPECT对TIA局部脑血流减少的诊断符合率为96.2％,颈内动脉系统TIA为96.6％ ;椎基底动脉系统TIA为95.7%。诊断符合率明显高于TCD和CCDS(50%)。结论 在TIA发作间期测定rCBF具有诊断价值,对TIA病人及时进行长期治疗是必要的。SPECT 对及时治疗TIA和防止局部脑组织不可逆性改变发生有重要的意义,可作为TIA的有效诊断方。TIA的血管因素主要为脑动脉硬化、颅内外血管的狭窄和颈动脉斑块数量及质量。
Objective To explore the relationship between local cerebral blood flow reduction and vascular factors and to find an effective diagnostic method for TIA. Methods The TIA patients were examined by SPECT%, TCD% and CCDS, and the results were analyzed. Results The coincidence rate of SPECT to the diagnosis of local cerebral blood flow reduction in TIA was 96.2%. The TIA in internal carotid artery system was 96.6%. The TIA in vertebrobasilar artery system was 95.7%. The diagnostic coincidence rate was significantly higher than TCD and CCDS (50%). Conclusions The determination of rCBF in the interictal period of TIA is of diagnostic value. It is necessary to treat chronic TIA patients in time. SPECT on the timely treatment of TIA and prevent irreversible changes in local brain tissue has important significance, can be used as a valid diagnostic TIA. TIA vascular factors mainly cerebral arteriosclerosis, extracranial vascular stenosis and carotid plaque number and quality.