Mapping Structural Brain Alterations in Obsessive-Compulsive Disorder
Open Access
- 1 July 2004
- journal article
- research article
- Published by American Medical Association (AMA) in Archives of General Psychiatry
- Vol. 61 (7), 720-730
- https://doi.org/10.1001/archpsyc.61.7.720
Abstract
Background Recent technical developments have made it feasible to comprehensively assess brain anatomy in psychiatric populations. Objective To describe the structural brain alterations detected in the magnetic resonance images of a large series of patients with obsessive-compulsive disorder (OCD) using imaging procedures that allow the evaluation of volume changes throughout the brain. Design Case-control study. Setting Referral OCD unit in a tertiary hospital. Participants A consecutive sample of 72 outpatients with OCD and 72 age- and sex-matched control subjects. Interventions Three-dimensional sequences were obtained in all participants. A statistical parametric mapping approach was used to delineate possible anatomical alterations in the entire brain. To preserve volumetric information, voxel values were modulated by the Jacobian determinants (volume change measurement) derived from spatial normalization. Main Outcome Measures Voxelwise brain volumes. Results The brains of patients with OCD showed reduced gray matter volume in the medial frontal gyrus, the medial orbitofrontal cortex, and the left insulo-opercular region. A relative increase in gray matter volume was observed bilaterally in the ventral part of the putamen and in the anterior cerebellum. All these brain alterations were abnormally correlated in patients with OCD, and age statistically significantly contributed to the relative enlargement observed in the striatal areas. Disease severity, the nature of symptoms, and comorbidities were not related to the changes described. Nevertheless, patients with prominent aggressive obsessions and checking compulsions showed reduced amygdala volume in the right hemisphere. Conclusions The pattern of anatomical features depicted by this voxelwise approach is consistent with data from functional studies. The reported anatomical maps identified the specific parts of the frontostriatal system that were altered in patients with OCD and detected changes in anatomically connected distant regions. These data further define the structural brain alterations in OCD and may contribute to constraining the prevailing biological models of this psychiatric process.Keywords
This publication has 17 references indexed in Scilit:
- CSF Spaces of the Sylvian Fissure Region in Severe Melancholic DepressionNeuroImage, 2002
- Why Voxel-Based Morphometry Should Be UsedNeuroImage, 2001
- Incorporating Prior Knowledge into Image RegistrationNeuroImage, 1997
- The brain in obsessive-compulsive disorder.Journal of Neurology, Neurosurgery & Psychiatry, 1995
- Reduced Caudate Nucleus Volume in Obsessive-compulsive DisorderArchives of General Psychiatry, 1995
- Toward a Neuroanatomy of Obsessive-Compulsive DisorderArchives of General Psychiatry, 1992
- Increased right caudate nucleus size in obsessive-compulsive disorder: Detection with magnetic resonance imagingPsychiatry Research: Neuroimaging, 1992
- Brain MRI in obsessive-compulsive disorderPsychiatry Research, 1991
- The assessment and analysis of handedness: The Edinburgh inventoryNeuropsychologia, 1971
- THE ASSESSMENT OF ANXIETY STATES BY RATINGPsychology and Psychotherapy: Theory, Research and Practice, 1959