Correlation of In Vivo Tau PET with Whole-Brain Histological Tau in Alzheimer’s Disease
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Key Highlights
Medicine · Neurology
A clinicopathological study correlated in vivo ¹⁸F-flortaucipir PET scans with whole-brain, quantitative immunohistochemical tau density maps from two human brains at different Alzheimer’s disease stages. The researchers found that only AT8 antibody-labeled tau (p-tau Ser202/Thr205) showed a notable correlation with PET signals in a Braak VI case, while medial temporal lobe tau burden was systematically underestimated by the tracer. For a medical student focused on evidence-based practice, this work directly informs the interpretation of a key clinical imaging tool used in Alzheimer’s diagnosis and therapy evaluation, highlighting its current limitations.
Novelty: 92%
Rigor: 88%
Significance: 90%
Validity: 85%
Clarity: 82%
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