Evidence is provided that multiregion T1‐MRI patterns can inform on tau‐PET burden in AD and may support approximate tau staging when tau‐PET is unavailable, especially in subjects with more advanced tau burden.
Abstract
Tau positron emission tomography (PET) probes Alzheimer's disease (AD) severity via regional tau spread but is not widely available. We tested whether multiregion structural magnetic resonance imaging (MRI) could approximate individual tau burden.
Across regions and networks, SEOT performed similarly or better than tau load in predicting metabolic dysfunction and may improve diagnostic characterisation and prediction of cognitive impairment beyond [18F]FDG-PET.
Arthur C. Macedo, Lydia Trudel, S. A. Hosseini et al.· EBioMedicine· 1 citation
Quantitative T1 mapping (qT1) is a magnetic resonance imaging (MRI) biomarker of brain microstructural changes; however, its application in Alzheimer disease (AD) remains limited. We compared cortico-limbic qT1 values between patients with AD and healthy controls (HCs) and examined their relationship with amyloid burde...
L. Gualco, N. Montobbio, M. Losa et al.· European Radiology Experimen...· 0 citations
It is suggested that MRI-derived measures of cortical thickness, tissue volumes, BPV, and BPF provide useful structural biomarkers of AD and emphasize the importance of considering voxel geometry and segmentation methodology when evaluating neuroimaging biomarkers.
Abstract INTRODUCTION We compared the association between mild behavioral impairment (MBI) and first‐ versus second‐generation tau‐positron emission tomography (PET) tracers in preclinical and prodromal Alzheimer's disease (AD). METHODS We assessed 110 individuals with head‐to‐head [18F]MK6240 and [18F]Flortaucipir tau...
I. Bizzi, Arthur C. Macedo, Lydia Trudel et al.· Alzheimer's & Dementia· 0 citations
BackgroundAlzheimer's disease (AD) is increasingly defined biologically. Amyloid positron emission tomography (PET) is a validated biomarker; however, evidence from truly consecutive, real-world memory-clinic cohorts spanning subjective cognitive decline (SCD), mild cognitive impairment (MCI), and early AD remains limi...
Heii Arai, Satoko Aiba, Hideo Yamamoto et al.· Journal of Alzheimer's Disea...· 0 citations
High-order joint independent component analysis was used to identify fine-grained, data-driven patterns of Amyloid-Tau covariance across individuals, and overlapping abnormality was also associated with cognition across the greatest number of components and showed the strongest overall association with ADAS13.
Bikesh Bimali, Jia-Yu Chen, A. Iraji· bioRxiv· 0 citations
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