FDG-PET和MRI亚型之间的比较包括以下三个方面:1)在一种模态下进行亚型划分,并将其相应的萎缩/低代谢模式映射到另一种模态;2)通过FDG-PET和MRI得到的亚型频率;3)各个亚型分配之间的交叉情况。采用W分数评估FDG-PET各亚型的局部萎缩模式和MRI各亚型的局部低代谢模式。W分数通过从认知正常数据中减去均值并除以标准差...
Brain 18-FDG PET scan in central nervous system Langerhan's cell histiocytosis. J Pediatr 2002;141:435-440.Ulrika, CalmingCecilia, BemstrandMikael, MosskinSharon Stone, ElanderMartin, IngvarJan-Inge, Henter. (2002) Brain 18-FDG PET scan in central nervous system langerhans cell histiocytosis....
本研究使用示踪剂注射后10 min的18F-FDG图像,在ROI和体素水平处理和分析下载的18F-FDG PET图像。 本研究中42例特发性PD分别于不同就诊时间接受18F-FDG PET扫描,共57个数据点纳入纵向分析:7例在基线就诊时行第一次扫描,15例在12个...
Avoid intense exercise for 2 days before the FDG PET scan. For 24 hours before the scan, avoid sugar intake and follow a low-carbohydrate diet. Dietary sugar will prevent cancer cells from using the FDG radiotracer, which can make it difficult for doctors to accurately identify cancer. For ...
通过评估血糖短期变化情况,预测18F-FDG PET/CT显像的肌肉异常摄取。 资料与方法 回顾性分析2019年1月—2020年6月于北京大学人民医院就诊的高血糖症PET/CT受检者100例,收集检查前3 d内基线空腹血糖(BGL基线)、检查前空腹血糖(BGL检查前...
为探究正常衰老过程中大脑功能变化的时空模式,研究人员开展了利用18F - 氟代脱氧葡萄糖正电子发射断层扫描(18F-FDG PET)评估体内葡萄糖代谢变化的研究。结果揭示了衰老过程中大脑葡萄糖代谢的性别差异,明确了关键年龄期,为相关研究提供参考。 葡萄糖是人类大脑的主要能量来源,与大脑功能密切相关。本研究旨在利用18F - ...
11C-甲基-N-2β-甲基酯-3β-(4-F-苯基)托烷[11C-2-b-carbomethoxy-3b-(4-fluorophenyl) tropane,11C-CFT] PET/CT为脑内多巴胺能神经递质转运体显像,可与多巴胺转运蛋白(dopamine transporter,DAT)进行特异性结合,显示DAT的功...
All subjects were undergoing head 18F-FDG PET/MR scan. The areas of brain abnormal FDG uptake in AE group were obtained using statistical parametric mapping 12 (SPM12) processing package. The volume/total intracranial volume (volume/TIV) and average standardized uptake value ratio (SUVr) of ...
Introduction: We have been using a method of paired FDG PET scans immediately prior to and following infusion with psychoactive compounds as a means of assessing regional effects of these drugs on brain metabolism. We wished to test the validity of this method by use of placebo (PBO) ...
来自法国的研究人员针对COVID-19后遗症(PCC)患者脑功能与认知障碍的关联机制,开展了一项前瞻性纵向研究。通过结合18F-FDG-PET脑代谢成像与神经心理评估(NPA),发现小脑低代谢与焦虑症状(HARS)显著相关,且一年后未见代谢恢复或认知改善,为PCC神经损伤提供了客观影像学证据。