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Neuroimaging in lissencephaly type I.

J F de Rijk-van Andel1, M S van der Knaap, J Valk

  • 1Department of Neurology, Westeinde Hospital, The Hague, The Netherlands.

Neuroradiology
|January 1, 1991
PubMed
Summary

Lissencephaly type I, a brain development disorder, shows distinct imaging patterns. Patients with this condition exhibit significantly thicker cerebral cortex and a larger Sylvian fissure index compared to healthy individuals.

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Area of Science:

  • Neurology
  • Radiology
  • Developmental Biology

Background:

  • Lissencephaly type I is a severe disorder affecting cerebral cortex development.
  • Accurate diagnosis relies on identifying characteristic neuroimaging findings.

Purpose of the Study:

  • To define quantitative imaging biomarkers for lissencephaly type I using CT and MR scans.
  • To differentiate lissencephaly type I from normal brain development based on specific measurements.

Main Methods:

  • Comparative analysis of CT and MR scans from 22 lissencephaly patients and 49 controls.
  • Measurement of cortical thickness and the Width/Depth of the Sylvian Fissure (WSF/DSF) index.

Main Results:

  • Lissencephaly patients consistently showed cortical thickness >10 mm, versus <7 mm in controls.
  • The WSF/DSF index was >0.29 in lissencephaly, compared to <0.25 in normal subjects.

Conclusions:

  • Increased cortical thickness and WSF/DSF index are reliable quantitative indicators of lissencephaly type I.
  • These imaging metrics aid in the diagnosis of this severe developmental brain disorder.

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