학술논문

Alzheimer's disease heterogeneity revealed by neuroanatomical normative modeling
Document Type
article
Source
Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring, Vol 16, Iss 1, Pp n/a-n/a (2024)
Subject
Alzheimer's disease
amyloid PET
heterogeneity
MRI
neuroanatomical normative modeling
neurodegeneration
Neurology. Diseases of the nervous system
RC346-429
Geriatrics
RC952-954.6
Language
English
ISSN
2352-8729
Abstract
Abstract INTRODUCTION Overlooking the heterogeneity in Alzheimer's disease (AD) may lead to diagnostic delays and failures. Neuroanatomical normative modeling captures individual brain variation and may inform our understanding of individual differences in AD‐related atrophy. METHODS We applied neuroanatomical normative modeling to magnetic resonance imaging from a real‐world clinical cohort with confirmed AD (n = 86). Regional cortical thickness was compared to a healthy reference cohort (n = 33,072) and the number of outlying regions was summed (total outlier count) and mapped at individual‐ and group‐levels. RESULTS The superior temporal sulcus contained the highest proportion of outliers (60%). Elsewhere, overlap between patient atrophy patterns was low. Mean total outlier count was higher in patients who were non‐amnestic, at more advanced disease stages, and without depressive symptoms. Amyloid burden was negatively associated with outlier count. DISCUSSION Brain atrophy in AD is highly heterogeneous and neuroanatomical normative modeling can be used to explore anatomo‐clinical correlations in individual patients.