PMID: 11335691May 4, 2001Paper

Neuropathological abnormalities in schizophrenia: evidence from magnetization transfer imaging

Brain : a Journal of Neurology
Jacqueline FoongM Ron

Abstract

Post-mortem and structural brain imaging studies in schizophrenia have reported macroscopic changes such as global and regional cortical volume reductions, but it has been more difficult to characterize the histopathological changes that underlie these abnormalities. Magnetization transfer imaging (MTI), a novel MRI technique, more sensitive to subtle or early neuropathological changes than conventional MRI, provides a quantitative measure of macromolecular structural integrity represented by the magnetization transfer ratio (MTR). In this study, we used MTI to examine 25 patients with schizophrenia compared with 30 age-matched controls. A voxel-based analysis of the MTR maps revealed widespread MTR reductions in the cortex unrelated to volume reduction, predominantly in the frontal and temporal regions, in the schizophrenic patients when compared with controls. MTR reductions in bilateral parieto-occipital cortex and the genu of the corpus callosum were associated with the severity of negative symptoms in the schizophrenic patients. However, MTR changes were not related to other clinical variables of age, duration of illness and current dose of antipsychotic medication. This study demonstrates that MTR abnormalities in the cor...Continue Reading

Citations

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