Dataset Information

Evaluation of the early-phase [¹⁸F]AV45 PET as an optimal surrogate of [¹⁸F]FDG PET in ageing and Alzheimer's clinical syndrome.

ABSTRACT: Dual-phase [¹⁸F]AV45 positron emission tomography (PET) is highly promising in the assessment of neurodegenerative diseases, allowing to obtain information on both neurodegeneration (early-phase; eAV45) and amyloid deposition (late-phase; lAV45) which are highly complementary; yet eAV45 needs further evaluation. This study aims at validating eAV45 as an optimal proxy of [¹⁸F]FDG PET in a large mixed-population of healthy ageing and Alzheimer's clinical syndrome participants (n = 191) who had [¹⁸F]FDG PET, eAV45 and lAV45 scans. We found early time frame 0-4 min to give maximal correlation with [¹⁸F]FDG PET and minimal correlation with lAV45. Moreover, maximal overlap of [¹⁸F]FDG PET versus eAV45 associations with clinical diagnosis and cognition was obtained with pons scaling. Across reference regions, classification performance between clinical subgroups was similar for both eAV45 and [¹⁸F]FDG PET. These findings highlight the optimal use of eAV45 to assess neurodegeneration as a validated proxy of [¹⁸F]FDG PET. On top of this purpose, this study showed that combined [¹⁸F]AV45 PET dual-biomarker even outperformed [¹⁸F]FDG PET or lAV45 alone.

SUBMITTER: Vanhoutte M

PROVIDER: S-EPMC8274342 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Evaluation of the early-phase [18F]AV45 PET as an optimal surrogate of [18F]FDG PET in ageing and Alzheimer's clinical syndrome.

Vanhoutte Matthieu M Landeau Brigitte B Sherif Siya S de la Sayette Vincent V Dautricourt Sophie S Abbas Ahmed A Manrique Alain A Chocat Anne A Chételat Gaël G

NeuroImage. Clinical 20210701

Dual-phase [18F]AV45 positron emission tomography (PET) is highly promising in the assessment of neurodegenerative diseases, allowing to obtain information on both neurodegeneration (early-phase; eAV45) and amyloid deposition (late-phase; lAV45) which are highly complementary; yet eAV45 needs further evaluation. This study aims at validating eAV45 as an optimal proxy of [18F]FDG PET in a large mixed-population of healthy ageing and Alzheimer's clinical syndrome participants ...[more]

PMID: 34247116

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Dataset Information

Evaluation of the early-phase [¹⁸F]AV45 PET as an optimal surrogate of [¹⁸F]FDG PET in ageing and Alzheimer's clinical syndrome.

Publications

Evaluation of the early-phase [<sup>18</sup>F]AV45 PET as an optimal surrogate of [<sup>18</sup>F]FDG PET in ageing and Alzheimer's clinical syndrome.

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