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目的 了解放射性核素脑血流负荷显像的临床意义。方法 以乙酰唑胺、双嘧达莫或直立负荷作为介入手段 ,施行 115例次隔日法脑负荷血流灌注显像。通过负荷、静息影像和半定量数据对比 ,获得脑血管储备功能资料。结果 大脑皮层对负荷介入的局部反应表现为 5种类型 ,可反映其脑血管储备能力 ,使脑动脉硬化患者的诊断阳性率由静息态的 5 1.6 %提高至 82 .3% ,短暂性脑缺血发作 (TIA)的诊断阳性率从静息态的4 5 .8%提高至 75 .0 %。结论 脑负荷显像有助于发现隐匿性病灶 ,提高检出脑血管病变的灵敏度。
Objective To understand the clinical significance of radionuclide cerebral blood flow imaging. Methods Acetazolamide, dipyridamole or erection load were used as the intervention method to perform 115 cases of sub-daily cerebral perfusion perfusion imaging. Through the load, resting images and semi-quantitative data comparison, access to cerebral vascular reserve function data. Results There were 5 types of local responses to load intervention in the cerebral cortex, which could reflect the capacity of cerebrovascular reserve. The diagnostic positive rate of cerebral arteriosclerosis was increased from 5 1.6% of resting state to 82.3% of transient cerebral The positive rate of diagnosis of ischemic stroke (TIA) increased from 45.8% at rest to 75.0%. Conclusion Brain load imaging helps to find occult lesions and improve the sensitivity of detection of cerebrovascular disease.