Age-related changes of normal adult brain structure: analysed with diffusion tensor imaging / 中华医学杂志(英文版)
Chinese Medical Journal
; (24): 1059-1065, 2005.
Artigo
em Inglês
| WPRIM (Pacífico Ocidental)
| ID: wpr-288280
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>BACKGROUND</b>It is known that the brain structure changes with normal aging. The objective of this study was to quantify the anisotropy and average diffusion coefficient (DCavg) of the brain in normal adults to demonstrate the microstructure changes of brain with aging.</p><p><b>METHODS</b>One hundred and six normal adults were examined with diffusion tensor imaging (DTI). The fractional anisotropy (FA), 1-volume ratio (1-VR), relative anisotropy (RA) and average diffusion coefficient (DCavg) of different anatomic sites of brain were measured, correlated with age and compared among three broad age groups.</p><p><b>RESULTS</b>Except in lentiform nucleus, the anisotropy increased and DCavg decreased with aging. Both anisotropy and DCavg of lentiform nucleus increased with aging. The normal reference values of DTI parameters of normal Chinese adult in major anatomic sites were acquired.</p><p><b>CONCLUSIONS</b>DTI data obtained noninvasively can reflect the microstructural changes with aging. The normal reference values acquired can serve as reference standards in differentiation of brain white matter diseases.</p>
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Encéfalo
/
Envelhecimento
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Anisotropia
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Imagem de Difusão por Ressonância Magnética
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Difusão
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Métodos
Limite:
Adulto
/
Idoso
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Feminino
/
Humanos
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Masculino
Idioma:
Inglês
Revista:
Chinese Medical Journal
Ano de publicação:
2005
Tipo de documento:
Artigo