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多中心比较[F]flortaucipir、[F]RO948 和 [F]MK6240 tau PET 示踪剂,以检测用于鉴别诊断的常见目标 ROI。

A multicenter comparison of [F]flortaucipir, [F]RO948, and [F]MK6240 tau PET tracers to detect a common target ROI for differential diagnosis.

机构信息

Clinical Memory Research Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden.

Translational Neuroimaging Laboratory, McGill Centre for Studies in Aging, McGill University, Montreal, QC, Canada.

出版信息

Eur J Nucl Med Mol Imaging. 2021 Jul;48(7):2295-2305. doi: 10.1007/s00259-021-05401-4. Epub 2021 May 27.

DOI:10.1007/s00259-021-05401-4
PMID:34041562
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8175317/
Abstract

PURPOSE

This study aims to determine whether comparable target regions of interest (ROIs) and cut-offs can be used across [F]flortaucipir, [F]RO948, and [F]MK6240 tau positron emission tomography (PET) tracers for differential diagnosis of Alzheimer's disease (AD) dementia vs either cognitively unimpaired (CU) individuals or non-AD neurodegenerative diseases.

METHODS

A total of 1755 participants underwent tau PET using either [F]flortaucipir (n = 975), [F]RO948 (n = 493), or [F]MK6240 (n = 287). SUVR values were calculated across four theory-driven ROIs and several tracer-specific data-driven (hierarchical clustering) regions of interest (ROIs). Diagnostic performance and cut-offs for ROIs were determined using receiver operating characteristic analyses and the Youden index, respectively.

RESULTS

Comparable diagnostic performance (area under the receiver operating characteristic curve [AUC]) was observed between theory- and data-driven ROIs. The theory-defined temporal meta-ROI generally performed very well for all three tracers (AUCs: 0.926-0.996). An SUVR value of approximately 1.35 was a common threshold when using this ROI.

CONCLUSION

The temporal meta-ROI can be used for differential diagnosis of dementia patients with [F]flortaucipir, [F]RO948, and [F]MK6240 tau PET with high accuracy, and that using very similar cut-offs of around 1.35 SUVR. This ROI/SUVR cut-off can also be applied across tracers to define tau positivity.

摘要

目的

本研究旨在确定是否可以在[F]flortaucipir、[F]RO948 和 [F]MK6240 tau 正电子发射断层扫描(PET)示踪剂中使用可比的感兴趣区域(ROI)和截断值,用于阿尔茨海默病(AD)痴呆与认知正常(CU)个体或非 AD 神经退行性疾病的鉴别诊断。

方法

共有 1755 名参与者接受了 tau PET 检查,其中使用 [F]flortaucipir(n=975)、[F]RO948(n=493)或 [F]MK6240(n=287)。计算了四个理论驱动的 ROI 和几个示踪剂特异性数据驱动(层次聚类)ROI 的 SUVR 值。使用接收器操作特征分析和 Youden 指数分别确定 ROI 的诊断性能和截断值。

结果

理论和数据驱动的 ROI 之间观察到可比的诊断性能(接收器操作特征曲线下的面积 [AUC])。该理论定义的颞meta-ROI 通常在所有三种示踪剂中表现非常出色(AUC:0.926-0.996)。当使用此 ROI 时,大约 1.35 的 SUVR 值是一个常见的阈值。

结论

颞meta-ROI 可用于使用[F]flortaucipir、[F]RO948 和 [F]MK6240 tau PET 进行痴呆患者的鉴别诊断,具有很高的准确性,且使用非常相似的截断值约为 1.35 SUVR。该 ROI/SUVR 截断值也可以应用于示踪剂以定义 tau 阳性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f558/8175317/fe0e0cf7ef37/259_2021_5401_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f558/8175317/3b5c9c2ffaa4/259_2021_5401_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f558/8175317/f9651219aad4/259_2021_5401_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f558/8175317/fe0e0cf7ef37/259_2021_5401_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f558/8175317/3b5c9c2ffaa4/259_2021_5401_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f558/8175317/f9651219aad4/259_2021_5401_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f558/8175317/fe0e0cf7ef37/259_2021_5401_Fig3_HTML.jpg

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