MRI cortical thickness biomarker predicts AD-like CSF and cognitive decline in normal adults.

ABSTRACT:

Objective

New preclinical Alzheimer disease (AD) diagnostic criteria have been developed using biomarkers in cognitively normal (CN) adults. We implemented these criteria using an MRI biomarker previously associated with AD dementia, testing the hypothesis that individuals at high risk for preclinical AD would be at elevated risk for cognitive decline.

Methods

The Alzheimer's Disease Neuroimaging Initiative database was interrogated for CN individuals. MRI data were processed using a published set of a priori regions of interest to derive a single measure known as the AD signature (ADsig). Each individual was classified as ADsig-low (≥ 1 SD below the mean: high risk for preclinical AD), ADsig-average (within 1 SD of mean), or ADsig-high (≥ 1 SD above mean). A 3-year cognitiv

SUBMITTER: Dickerson BC 

PROVIDER: S-EPMC3466670 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature