ABSTRACT
Cerebrovascular disease (CVD) is often present in old age and may be associated with microstructural pathology of white matter (WM) and cognitive dysfunction. The current review investigated the relationship between CVD, cognitive status and WM integrity as assessed by diffusion tensor imaging (DTI).
Methods:
DTI studies were searched on ISI and Pubmed databases from 2002 to 2012.
Results:
Studies evidenced DTI changes in WM as associated with vascular disease and provide increasing support for DTI as a valuable method for early detection of CVD.
Conclusion:
DTI parameters can serve as important biomarkers in monitoring vascular disease progression and treatment response and may represent a surrogate marker of WM tract integrit.
Key words:
diffusion tensor; DTI; neuroimaging; vascular disease; white matter; cognition; vascular cognitive impairment
RESUMO
A doença cérebro-vascular (DCV) está frequentemente presente na idade avançada, podendo se associar à patologia microscópica da substância branca (SB) e à disfunção cognitiva. A presente revisão investiga a relação entre DCV, status cognitivo e a integridade da SB, através da avaliação pelo tensor de difusão (DTI).
Métodos:
Os estudos em DTI foram selecionados a partir das bases ISI e Pubmed entre 2002 e 2012.
Resultados:
Os estudos evidenciaram alterações do DTI na SB associadas à doença vascular e fornecem evidencia importante para o DTI como um método valioso para a detecção precoce da DCV.
Conclusão:
Os parâmetros do DTI podem servir como importantes biomarcadores na monitoração da doença vascular quanto a sua progressão e resposta terapêutica e parecem representar um marcador substituto da integridade da SB.
Palavras-chave:
tensor de difusão; DTI; neuroimagem; doença vascular; substância branca; cognição; prejuízo cognitivo vascular
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Publication Dates
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Publication in this collection
Jul-Sep 2012
History
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Received
12 June 2012 -
Accepted
15 Aug 2012