Cited by 203Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsMedical Imaging Techniques and Applications

Tau-positron emission tomography correlates with neuropathology findings.

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Lowe, Val J., Lundt, Emily S., Albertson, Sabrina M., Min, Hoon‐Ki, Fang, Ping, Przybelski, Scott A., Senjem, Matthew L., Schwarz, Christopher G. +11 more·2020·Alzheimer's & Dementia

Abstract

INTRODUCTION: Comparison of tau (flortaucipir) positron emission tomography (FTP-PET) to autopsy is important to demonstrate the relationship of FTP-PET to neuropathologic findings. METHODS: Autopsies were performed on 26 participants who had antemortem FTP-PET. FTP-PET standardized uptake value ratios (SUVRs) were compared to autopsy diagnoses and Braak tangle stage. Quantitative tau burden was compared to regional FTP-PET signal. RESULTS: Participants with Braak stages of IV or greater had elevated FTP-PET signal. FTP-PET was elevated in participants with Alzheimer's disease. An FTP-PET SUVR cut point of 1.29 was determined to be optimal. Quantitative measurements of hippocampal and temporal lobe tau burden were highly correlated to FTP-PET signal (rho's from 0.61 to 0.70, P ≤ .02). DISCUSSION: Elevated FTP-PET reflects Braak IV or greater neuropathology. Participants with primary age-related tauopathy and hippocampal sclerosis did not show elevated FTP-PET signal. Secondary neuropathologic diagnoses of Alzheimer's disease neuropathologic change can lead to borderline elevated FTP-PET signal.

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Crossref · 10.1016/j.jalz.2019.09.079

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  • Studies combining antemortem imaging with neuropathological validation have shown 18F-flortaucipir PET is highly sensitive for presence of high levels of AD neuropathological change, with visual rating positivity corresponding to Braak levels IV or greater.

    “Studies combining antemortem imaging with neuropathological validation have shown that 18F-flortaucipir PET is highly sensitive for presence of high levels of AD neuropathological change with visual rating positivity corresponding to Braak levels IV or greater [184, 185].”

    From The use of neuroimaging techniques in the early and differential diagnosis of dementia (2023) · cites this paper as [185]

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  • Studies comparing antemortem tau positron emission tomography imaging with autopsy have begun assessing the ability of flortaucipir to detect underlying neurofibrillary tangles in Alzheimer disease and non-Alzheimer disease dementias.

    “Studies comparing antemortem tau PET imaging with autopsy have begun assessing the ability of flortaucipir to detect underlying NFTs in AD and non-AD dementias.25,26,27,28,29,30,31,32,33”
  • A recent study of 26 cases comparing flortaucipir PET image and autopsy findings demonstrated sensitivity 87% and specificity 82% for identifying AD-spectrum pathological diagnoses, using quantitative analysis of a mesial, inferior, or middle temporal lobe region of interest.

    “In support of this finding and the quantitative data presented herein, a recent study of 26 cases comparing flortaucipir PET image and autopsy findings demonstrated a sensitivity of 87% and specificity of 82% for identifying AD-spectrum pathological diagnoses, using quantitative analysis of a mesial, inferior, or middle temporal lobe region of interest.25”
  • Twelve of these autopsy-confirmed cases had pathological evidence of Braak stages IV to VI NFTs (2 cases with Braak stage IV) with moderate to frequent neuritic plaques and were above the SUVR threshold for positivity for the flortaucipir temporal lobe region of interest.

    “Twelve of these autopsy-confirmed cases had pathological evidence of Braak stages IV to VI NFTs (2 cases with Braak stage IV) with moderate to frequent neuritic plaques and were above the SUVR threshold for positivity for the [18F]flortaucipir temporal lobe region of interest.”

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Authors
Lowe, V. J., Lundt, E. S., Albertson, S. M., Min, H., Fang, P., Przybelski, S. A., Senjem, M. L., Schwarz, C. G., Kantarci, K., Boeve, B., Jones, D. T., Reichard, R. R., Tranovich, J. F., Hanna Al‐Shaikh, F. S., Knopman, D. S., Jack, C. R., Dickson, D. W., Petersen, R. C., & Murray, M. E.
Affiliations
  • Mayo Clinic (US)
  • Department of Neuroscience Mayo Clinic Jacksonville FL USA
Corresponding author
  • Lowe, Val J.
  • Murray, Melissa E.
Venue
Alzheimer's & Dementia
Publisher
Wiley
Published
2020-01-04
Volume
16
Issue
3
Pages
561-571
ISSN
  • 1552-5260 (ISSN-L)
  • 1552-5279
OpenAlex
W2991594523
Cited by
203
References
44
Citations by year
2026: 26 · 2025: 37 · 2024: 28 · 2023: 30 · 2022: 33 · 2021: 30 · 2020: 18
FWCI
15.87
Type
journal article
Language
en
Open access
Locations
  • Alzheimer s & Dementia (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (P50 AG016574, R01 NS89757, R01 NS089544, R01 DC10367, R01 AG011378, R01 AG041851, R01 AG034676, R01 AG054449, R01 NS097495, U01 AG006786, R21 NS094489)
  • Robert Wood Johnson Foundation
  • Mayo Foundation for Medical Education and Research
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
Keywords
tau PET, flortaucipir
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Autopsy, Brain, Female, Humans, Male, tau Proteins, Positron-Emission Tomography

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