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Hemimegalencephaly: MR imaging in five children.
Radiology
|October 1, 1987
Summary
Hemimegalencephaly, a rare brain malformation causing seizures, is best diagnosed using magnetic resonance (MR) imaging. This method effectively shows characteristic brain asymmetry and cortical dysplasia, aiding in understanding this condition.
Area of Science:
- Neurology
- Radiology
- Pediatric Neurology
Background:
- Hemimegalencephaly is a rare congenital brain malformation.
- It presents with significant cerebral asymmetry and cortical dysplasia.
- Affected infants often experience early-onset seizures and severe encephalopathy.
Purpose of the Study:
- To evaluate diagnostic imaging methods for hemimegalencephaly.
- To characterize the imaging findings of hemimegalencephaly.
- To compare the efficacy of computed tomography (CT) and magnetic resonance (MR) imaging.
Main Methods:
- Retrospective analysis of five patients with hemimegalencephaly.
- Review of computed tomography (CT) scans.
- Detailed assessment of magnetic resonance (MR) imaging findings.
Main Results:
- Magnetic resonance (MR) imaging proved to be the most effective diagnostic tool.
- MR imaging revealed characteristic findings including hemispheric hypertrophy and lateral ventricle dilatation.
- Abnormal gyral patterns and cortical thickening on the enlarged side were consistently observed.
Conclusions:
- Magnetic resonance (MR) imaging is the preferred modality for diagnosing hemimegalencephaly.
- Imaging findings correlate well with established neuropathological data.
- Advanced neuroimaging is crucial for understanding and managing this rare condition.