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Journal Article
Research Support, Non-U.S. Gov't
Structural disconnectivity in schizophrenia: a diffusion tensor magnetic resonance imaging study.
British Journal of Psychiatry 2003 May
BACKGROUND: There is growing evidence that schizophrenia is a disorder of cortical connectivity. Specifically, frontotemporal and frontoparietal connections are thought to be functionally impaired. Diffusion tensor magnetic resonance imaging (DT-MRI) is a technique that has the potential to demonstrate structural disconnectivity in schizophrenia.
AIMS: To investigate the structural integrity of frontotemporal and frontoparietal white matter tracts in schizophrenia.
METHOD: Thirty patients with DSM-IV schizophrenia and thirty matched control subjects underwent DT-MRI and structural MRI. Fractional anisotropy - an index of the integrity of white matter tracts - was determined in the uncinate fasciculus, the anterior cingulum and the arcuate fasciculus and analysed using voxel-based morphometry.
RESULTS: There was reduced fractional anisotropy in the left uncinate fasciculus and left arcuate fasciculus in patients with schizophrenia compared with controls.
CONCLUSIONS: The findings of reduced white matter tract integrity in the left uncinate fasciculus and left arcuate fasciculus suggest that there is frontotemporal and frontoparietal structural disconnectivity in schizophrenia.
AIMS: To investigate the structural integrity of frontotemporal and frontoparietal white matter tracts in schizophrenia.
METHOD: Thirty patients with DSM-IV schizophrenia and thirty matched control subjects underwent DT-MRI and structural MRI. Fractional anisotropy - an index of the integrity of white matter tracts - was determined in the uncinate fasciculus, the anterior cingulum and the arcuate fasciculus and analysed using voxel-based morphometry.
RESULTS: There was reduced fractional anisotropy in the left uncinate fasciculus and left arcuate fasciculus in patients with schizophrenia compared with controls.
CONCLUSIONS: The findings of reduced white matter tract integrity in the left uncinate fasciculus and left arcuate fasciculus suggest that there is frontotemporal and frontoparietal structural disconnectivity in schizophrenia.
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