儿童脑死亡患者脑血流灌注显像特点

目的研究儿童脑死亡患者脑血流灌注显像特点。方法77例临床怀疑脑死亡的患者行脑血流灌注显像，最终77例患者全部于最后一次脑血流灌注显像后24h内死亡。本研究回顾性分析脑血流灌注显像的特点。结果15例（19．5％）患者脑血流灌注显像示脑内可见放射性分布，其中部分患者脑内可见明显放射性分布，其余患者可见少量放射性分布；62例（80．5％）患者脑血流灌注显像示脑内未见放射性分布。临床随访证实77例患者最终全部死亡。结论脑血流灌注显像示脑内未见放射性分布是典型脑死亡的表现，脑内未见放射性分布的患者一定不能存活，但脑内有放射性分布的患者并不预示患者存活。

Characteristic of brain perfusion imaging in children brain death patients

Objective To investigate characteristics of brain perfusion imaging of patients with brain death.Methods 77 pediatric patients with clinical suspicion brain death were received brain perfusion imaging,Eventually,77 patients were died within twenty four hours after last brain perfusion imaging.These data were retrospectively analyzed.Results In the 15 patients(19.5%),the images revealed minimal radioactivity in the brain,which can be seen clearly part of the brain of patients with radioactive distribution.The other patients can be seen a small number of radioactivity distribution.While 62 patients(80.5%) with cerebral perfusion imaging showed brain no radioactive distribution.Conclusion Patients with brain perfusion imaging of the brain no radioactive distribution is the performance of the typical brain-dead,brain no radioactive distribution must not survive.However,the brain radioactivity distribution of patients is not indicative of patient survival.