很可能的散发型Creutzfeldt-Jakob病脑葡萄糖代谢统计参数图分析

摘要

PurposeTo analyze fluorodeoxyglucose (FDG) PET/CT images in patients with probable sporadic Creutzfeldt-Jakob disease (sCJD) and the affected encephalic regions by statistical parameter mapping (SPM) so that image information can be provided for early clinical diagnosis.Materials and MethodsSeven patients with probable sCJD diagnosed according to the WHO criteria and 2009 clinical diagnosis criteria and 7 controls at the matched age were enrolled in the study. Both groups underwent FDG PET/CT scan and the images were analyzed visually and by SPM.ResultsThe visual analysis showed that the patients with probable sCJD had a hypometabolism in the wide pallium and basal ganglia region and that a portion of patients mainly had a lateral decrease. The SPM analysis exhibited that patients in sCJD group had a pattern of hypometabolism that affected bilateral parietal, frontal, occipital cortices and head of caudate (P<0.05) and indicated that the patients with lateral hypometabolism existed crossed cerebella diaschisis (P<0.05).ConclusionFDG PET/CT image features of sCJD patients present a hypometabolism in the wide pallium and basal ganglia region, which may be helpful in the diagnosis of sCJD in certain clinical situations.%目的：分析临床诊断为很可能的散发型Creutzfeldt-Jakob病（sCJD）患者的脑FDG PET/CT影像，总结其显像特点，并通过统计参数图（SPM）分析sCJD患者的受影响脑区，为临床早期诊断提供辅助影像学方法。资料与方法7例患者根据WHO标准及2009年临床诊断标准诊断为临床很可能的sCJD，均行FDG PET/CT显像，选择年龄匹配的7例健康体检者作为对照组，两组图像分别进行视觉分析及SPM分析。结果视觉分析见sCJD患者存在广泛的皮层及基底节区葡萄糖代谢减低，部分患者为单侧减低为主；SPM分析sCJD组双侧顶叶、额叶、枕叶及尾状核头放射性摄取较对照组减低（P<0.05），单侧为主患者的SPM分析提示存在小脑交叉失联络（P<0.05）。结论 sCJD患者的脑葡萄糖代谢特点为广泛的皮层及基底节区代谢减低，其葡萄糖代谢异常改变在特定的临床背景下可成为sCJD临床诊断的依据之一。