Frontal and temporal volume size of grey and white matter in patients with schizophrenia: an MRI parcellation study

Gaku Okugawa1, Chiharu Tamagaki, Ingrid Agartz

  • 1Department of Clinical Neuroscience, Human Brain Informatics, Karolinska Institutet, Stockholm 171-76, Sweden. okugawa@takii.kmu.ac.jp

Insights

This study found that individuals with schizophrenia, both men and women, exhibit reduced grey and white matter volumes in the temporal and frontal lobes, respectively. Cerebrospinal fluid volumes were also increased in these brain regions.

Area of Science:

  • Neuroimaging
  • Psychiatry
  • Brain Anatomy

Background:

  • Previous magnetic resonance imaging (MRI) studies indicated sex-specific brain volume differences in schizophrenia.
  • A need existed to investigate if these structural brain changes are consistent across both genders in schizophrenia.

Purpose of the Study:

  • To examine brain structural differences in a large cohort of male and female patients with schizophrenia compared to healthy controls.
  • To determine if reduced grey and white matter volumes and increased cerebrospinal fluid (CSF) volumes are present in both genders.

Main Methods:

  • Acquisition of MRI scans from 94 schizophrenia patients and 101 healthy subjects.
  • Automatic segmentation of grey matter, white matter, and CSF.
  • Automated parcellation of frontal, temporal, parietal, and occipital lobes using the Talairach atlas.

Main Results:

  • Schizophrenia patients showed significantly smaller grey matter volumes in the temporal lobe compared to controls.
  • Patients with schizophrenia exhibited significantly smaller white matter volumes in the frontal lobe.
  • Increased cerebrospinal fluid (CSF) volumes were observed in the frontal and temporal lobes of schizophrenia patients.

Conclusions:

  • Brain volume reductions in the frontal and temporal lobes are characteristic of schizophrenia in both men and women.
  • Cerebral volume alterations in schizophrenia are not limited to a specific sex.
  • These findings reinforce the role of widespread structural brain abnormalities in the pathophysiology of schizophrenia.

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