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Computed tomographic scan cerebral asymmetries and morphologic brain asymmetries. Correlation in the same cases post
Archives of Neurology
|April 1, 1984
Summary
Computed tomographic (CT) scan asymmetries correlate with postmortem brain asymmetries in the planum temporale region. These CT scan findings may indicate underlying anatomical brain differences linked to functional asymmetries, particularly in language processing.
Area of Science:
- Neuroscience
- Radiology
- Human Anatomy
Background:
- Cerebral asymmetries are well-documented in humans, particularly in language-dominant regions.
- Computed tomographic (CT) scans offer non-invasive visualization of brain structures.
- The relationship between in-vivo imaging asymmetries and postmortem anatomical differences requires further investigation.
Purpose of the Study:
- To investigate the correlation between computed tomographic (CT) scan-derived hemispheric asymmetries and postmortem measurements of the planum temporale.
- To determine if CT scan asymmetries can serve as indicators of underlying anatomical brain asymmetries.
Main Methods:
- Fifteen right-handed male subjects were included in the study.
- Computed tomographic (CT) scans were used to assess hemispheric asymmetries.
- Postmortem brain dissections were performed to measure planum temporale asymmetries.
Main Results:
- A significant positive correlation was observed between occipital length asymmetry on CT scans and planum temporale length asymmetry at autopsy.
- CT scan asymmetries, specifically at the level of the lateral ventricles' bodies, showed a strong link to postmortem findings.
Conclusions:
- Computed tomographic (CT) scan asymmetries may reflect true anatomical brain asymmetries.
- These anatomical differences could be the basis for observed functional asymmetries, including those related to language processing.
- CT imaging shows potential for identifying structural brain variations relevant to hemispheric specialization.