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Neuroimaging correlates with neuropathologic schemes in neurodegenerative disease.


ABSTRACT: INTRODUCTION:Neuroimaging biomarkers are important for early diagnosis of Alzheimer's disease, and comparing multimodality neuroimaging to autopsy data is essential. METHODS:We compared the pathologic findings from a prospective autopsy cohort (n = 100) to Pittsburgh compound B PET (PiB-PET), 18F-fluorodeoxyglucose PET (FDG-PET), and MRI. Correlations between neuroimaging biomarkers and neuropathologic schemes were assessed. RESULTS:PiB-PET showed strong correlations with Thal amyloid phase and Consortium to Establish a Registry for Alzheimer's Disease score and categorized 44% of Thal phase 1 participants as positive. FDG-PET and MRI correlated modestly with Braak tangle stage in Alzheimer's type pathology. A subset of participants with "none" or "sparse" neuritic plaque scores had elevated PiB-PET signal due to diffuse amyloid plaque. Participants with findings characterized as "suspected non-Alzheimer's pathophysiology" represented 15% of the group. DISCUSSION:PiB-PET is associated with Alzheimer's disease, neuritic plaques, and diffuse plaques. FDG-PET and MRI have modest correlation with neuropathologic schemes. Participants with findings characterized as suspected non-Alzheimer's pathophysiology most commonly had primary age-related tauopathy.

SUBMITTER: Lowe VJ 

PROVIDER: S-EPMC6662599 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Neuroimaging correlates with neuropathologic schemes in neurodegenerative disease.

Lowe Val J VJ   Lundt Emily S ES   Albertson Sabrina M SM   Przybelski Scott A SA   Senjem Matthew L ML   Parisi Joseph E JE   Kantarci Kejal K   Boeve Bradley B   Jones David T DT   Knopman David D   Jack Clifford R CR   Dickson Dennis W DW   Petersen Ronald C RC   Murray Melissa E ME  

Alzheimer's & dementia : the journal of the Alzheimer's Association 20190604 7


<h4>Introduction</h4>Neuroimaging biomarkers are important for early diagnosis of Alzheimer's disease, and comparing multimodality neuroimaging to autopsy data is essential.<h4>Methods</h4>We compared the pathologic findings from a prospective autopsy cohort (n = 100) to Pittsburgh compound B PET (PiB-PET), <sup>18</sup>F-fluorodeoxyglucose PET (FDG-PET), and MRI. Correlations between neuroimaging biomarkers and neuropathologic schemes were assessed.<h4>Results</h4>PiB-PET showed strong correlat  ...[more]

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