Conectividade Funcional Cerebral utilizando Técnicas de Imagens por Ressonância Magnética

Autores

  • Carlos Ernesto Garrido Salmon Universidade de Sao Paulo
  • Renata Ferranti Leoni Universidade de Sao Paulo

DOI:

https://doi.org/10.29384/rbfm.2019.v13.n1.p66-75

Palavras-chave:

integração cerebral, imagem funcional por ressonância magnética, marcação dos spins arteriais

Resumo

Nosso cérebro é reconhecido como uma rede complexa com propriedades topológicas de mundo pequeno: alta eficiência global, estrutura modular comunitária e elevado índice de agrupamento. Essa organização é preservada em diferentes escalas e para diferentes tipos de medidas de conectividade, especialmente ao se analisar a conectividade funcional em escala macroscópica. Neste artigo de revisão procuramos abordar aspectos metodológicos gerais para a estimativa da conectividade funcional (CF) cerebral humana a partir de imagens por ressonância magnética funcionais (IRMf). A CF é introduzida a partir de estudos prévios de neuroimagem funcional. Detalhes práticos e limitações da aquisição dos dados são discutidos considerando duas técnicas de aquisição: baseada no contraste dependente do nível de oxigenação do sangue e a marcação dosspins arteriais. Os principais passos para estimativa da CF a partir destas imagens são apresentados em duas etapas: pré-processamento e análise. Finalmente, diferentes aplicações dessas estimativas de CF cerebral na área da saúde são também apresentadas.

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Biografia do Autor

Carlos Ernesto Garrido Salmon, Universidade de Sao Paulo

Grande área: Engenharias / Área: Engenharia Biomédica / Subárea: Bioengenharia/Especialidade: Processamento de Sinais Biológicos.

Grande área: Engenharias / Área: Engenharia Biomédica / Subárea: Engenharia Médica/Especialidade: Transdutores para Aplicações Biomédicas.

Grande área: Ciências Exatas e da Terra / Área: Física / Subárea: Física Geral/Especialidade: Instrumentação Específica de Uso Geral em Física.

Grande área: Ciências Exatas e da Terra / Área: Física / Subárea: Ressonância Magnética.

Renata Ferranti Leoni, Universidade de Sao Paulo

Grande área: Engenharias / Área: Engenharia Biomédica / Subárea: Bioengenharia/Especialidade: Processamento de Sinais Biológicos.

Grande área: Engenharias / Área: Engenharia Biomédica / Subárea: Engenharia Médica/Especialidade: Transdutores para Aplicações Biomédicas.

Grande área: Ciências Exatas e da Terra / Área: Física / Subárea: Física Geral/Especialidade: Instrumentação Específica de Uso Geral em Física.

Grande área: Ciências Exatas e da Terra / Área: Física / Subárea: Ressonância Magnética.

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Publicado

2019-09-01

Como Citar

Salmon, C. E. G., & Leoni, R. F. (2019). Conectividade Funcional Cerebral utilizando Técnicas de Imagens por Ressonância Magnética. Revista Brasileira De Física Médica, 13(1), 66–75. https://doi.org/10.29384/rbfm.2019.v13.n1.p66-75

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