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量化PET空间范围作为一个潜在的辅助视觉解释的[18F]flortaucipir成像:TAU-SPEXEX
Emma M Coomans1,2, Bastiaan van Tol3,4, Colin Groot3,4
1Alzheimer Center Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands. e.coomans@amsterdamumc.nl.
概括
一个新的指标,TAU-SPEX,量化了tau-PET阳性的空间范围. TAU-SPEX准确地识别了tau-PET阳性,与神经纤维状结病理相关,并显示了与认知的关联.
科学领域:
- 神经成像是一种神经成像.
- 神经病理学神经病理学
- 认知科学 认知科学
背景情况:
- 对tau-PET扫描的视觉解释显示了tau阳性区域大小的显著变化.
- 量化陶积累的空间范围对于了解疾病进展和严重程度至关重要.
研究的目的:
- 引入和验证一种新型指标,TAU-SPEX (Tau空间范围),用于量化tau-PET阳性的空间范围.
- 评估TAU-SPEX与视觉阅读状态,尸检证实的神经纤维状 (NFT) 病理和认知功能的关联.
主要方法:
- 分析了来自四个队伍的1,645名参与者的flortaucipirPET数据.
- TAU-SPEX被计算为灰色质 voxels 的百分比,其 tau-PET 摄入量超过了值.
- 将TAU-SPEX的性能与标准SUVr测量结果进行比较,并根据视觉读数和尸检结果进行验证.
主要成果:
- TAU-SPEX在区分tau阴性与tau阳性参与者方面表现出高准确度 (AUC:0.97).
- 该指标显示高灵敏度和特异性,用于识别NFT Braak-V/VI病理 (>0.90) 的参与者.
- TAU-SPEX与并发和纵向认知表现有适度的关联,通常表现优于SUVr.
结论:
- TAU-SPEX是一个强大的指标,与视觉tau-PET读数,NFT病理和认知状态密切相关.
- 这一指标显示了在临床环境中作为[18F]flortaucipir扫描视觉解释的有价值辅助的潜力.
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