Topography of C-11-Pittsburgh compound B uptake in Alzheimer's disease: a voxel-based investigation of cortical and white matter regions

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Arquivos
art_FARIA_Topography_of_C11Pittsburgh_compound_B_uptake_in_Alzheimers_2019.PDF (1.21 MB)
Citações na Scopus
18
Tipo de produção
article
Data de publicação
2019
DOI
SciELO
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
ASSOC BRASILEIRA PSIQUIATRIA
Autores
Citação
REVISTA BRASILEIRA DE PSIQUIATRIA, v.41, n.2, p.101-111, 2019
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Objective: To compare results of positron emission tomography (PET) with carbon-11-labeled Pittsburgh compound B (C-11-PIB) obtained with cerebellar or global brain uptake for voxel intensity normalization, describe the cortical sites with highest tracer uptake in subjects with mild Alzheimer's disease (AD), and explore possible group differences in C-11-PIB binding to white matter. Methods: C-11-PIB PET scans were acquired from subjects with AD (n=17) and healthy elderly controls (n=19). Voxel-based analysis was performed with statistical parametric mapping (SPM). Results: Cerebellar normalization showed higher C-11-PIB uptake in the AD group relative to controls throughout the cerebral cortex, involving the lateral temporal, orbitofrontal, and superior parietal cortices. With global uptake normalization, greatest cortical binding was detected in the orbitofrontal cortex; decreased C-11-PIB uptake in white matter was found in the posterior hippocampal region, corpus callosum, pons, and internal capsule. Conclusion: The present case-control voxelwise C-11-PIB PET comparison highlighted the regional distribution of amyloid deposition in the cerebral cortex of mildly demented AD patients. Tracer uptake was highest in the orbitofrontal cortex. Decreased C-11-PIB uptake in white-matter regions in this patient population may be a marker of white-matter damage in AD.
Palavras-chave
Amyloid PET imaging, Alzheimer's disease, statistical parametric mapping
URI
https://observatorio.fm.usp.br/handle/OPI/31800
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MPS
Artigos e Materiais de Revistas Científicas - FM/MDR
Artigos e Materiais de Revistas Científicas - FM/MNE
Artigos e Materiais de Revistas Científicas - HC/ICESP
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - LIM/15
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