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Computed tomography in depression: association between ventricular size and psychopathology
S Schlegel1, W Maier, M Philipp
1Department of Psychiatry, University of Mainz, FRG.
Psychiatry Research
|August 1, 1989
Summary
Brain imaging in depressed patients revealed ventricular size correlates with psychopathology severity, particularly emotional blunting and negative symptoms, but not anxiety or depression scales. Retardation symptoms showed the strongest link to ventricular size.
Area of Science:
- Neuroscience
- Psychiatry
- Radiology
Background:
- Depression is associated with various psychopathological symptoms.
- Brain structural alterations are hypothesized to underlie these symptoms.
- Computed tomography (CT) allows for in vivo measurement of brain structures like ventricles.
Purpose of the Study:
- To investigate the relationship between brain alterations (ventricle-brain ratio and third ventricle width) and psychopathology in depressed patients.
- To explore correlations between CT measures and various psychiatric rating scales.
- To identify specific symptom dimensions linked to brain morphology.
Main Methods:
- Computed tomography (CT) scans were used to measure ventricle-brain ratio (VBR) and third ventricle width in 44 depressed patients.
- Patients were assessed using multiple psychiatric rating scales, including the Brief Psychiatric Rating Scale, Global Assessment Scale, Bech-Rafaelsen Melancholia Scale, Rating for Emotional Blunting, Scale for the Assessment of Negative Symptoms, Hamilton Rating Scale for Depression, and Hamilton Rating Scale for Anxiety.
- Statistical analyses, including correlation and item analyses, were performed to examine relationships between CT measures and symptom scores.
Main Results:
- No significant differences in VBR were found between endogenous and nonendogenous depressive subgroups.
- VBR and third ventricle width showed significant correlations with scores on the Brief Psychiatric Rating Scale, Global Assessment Scale, Bech-Rafaelsen Melancholia Scale, Rating for Emotional Blunting, and Scale for the Assessment of Negative Symptoms.
- Retardation-related items on the Bech-Rafaelsen Melancholia Scale were most strongly correlated with ventricular size.
- A wider third ventricle in psychotic patients correlated with higher retardation scores.
- No significant correlations were found between CT measures and anxiety, suicidal impulses, somatic complaints, or sleep disturbances.
Conclusions:
- Ventricular size in depressed patients is associated with specific dimensions of psychopathology, including negative symptoms and emotional blunting.
- The findings suggest a link between brain morphology and certain symptom clusters in depression, particularly psychomotor retardation.
- CT measures did not correlate with anxiety or depressive symptom severity as assessed by specific scales, indicating symptom specificity in the observed brain-behavior relationships.