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阿尔茨海默氏症成像联盟

Guilherme Povala1, Guilherme Bauer-Negrini1, Bruna Bellaver1

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概括
此摘要是机器生成的。

普遍的tau PET尺度 (Uniτ) 有效地将不同的tau PET标记剂,包括Flortaucipir,MK6240,PI2620和RO948协调为一个可比的尺度. 这种对3Dtau PET图像的协调简化了分析,并改善了tau负担的交叉研究比较.

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科学领域:

  • 神经成像是一种神经成像.
  • 核医学就是核医学.
  • 阿尔茨海默氏症疾病研究研究

背景情况:

  • 在不同标志物中协调定子发射断层扫描 (PET) 成像对于在研究和临床环境中准确比较负担至关重要.
  • 全球TAU PET尺度 (Uniτ) 是为了标准化各种TAU PET标记器的测量而开发的.

研究的目的:

  • 评估Uniτ尺度在调整Flortaucipir,MK6240,PI2620和RO948的tau PET图像中的性能.
  • 评估Uniτ能够创建一个通用尺度来比较不同标志物和研究中的tau负担的能力.

主要方法:

  • 评估了485名老龄化和阿尔茨海默病 (AD) 频谱中的个人,使用头对头的电磁共振扫描.
  • 使用小脑下部灰质作为参考生成标准化吸收值比率 (SUVRs).
  • 在一个训练集上估计了Uniτ参数,并应用了导出的方程来协调3D图像和PET图像.

主要成果:

  • 联合成功地将Flortaucipir,MK6240,PI2620和RO948的PET数据协调到一个共同的尺度上,显示出强烈的共识.
  • 统一的阳性分类与原来的基于SUVR的分类非常接近.
  • 整体3Dtau PET图像的协调减少了视觉变异性,并产生了与基于ROI的分析一致的结果.

结论:

  • 使用Uniτ方法,可以有效地将Tau PET标记剂与大型对比数据集协调到一个共同的尺度上.
  • Uniτ可以使整个3D图像与PET图像进行协调,消除了对预先确定的感兴趣区域 (ROI) 的需求.
  • Uniτ 尺度是免费访问的,适用于 ROI 和 3D tau PET 图像协调.