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Volumetric quantification of brain development using MRI

N Iwasaki1, K Hamano, Y Okada

  • 1Department of Paediatrics, University of Tsukuba, Ibaraki-ken, Japan. iwasakin@md.tsukuba.ac.jp

Neuroradiology
|February 11, 1998
PubMed
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This study introduces a 3D MRI method to measure brain volume, aiding in the assessment of cerebral development and myelination. The technique accurately quantifies brain structures, proving valuable for diagnosing developmental and motor disorders.

Area of Science:

  • Neuroimaging
  • Developmental Neuroscience
  • Quantitative Anatomy

Background:

  • Assessing cerebral development and myelination is crucial for understanding neurological disorders.
  • Existing methods may lack precision in volumetric quantification of brain structures.

Purpose of the Study:

  • To develop and validate a novel 3D MRI-based method for estimating cerebral volume.
  • To assess brain development and myelination in neurologically normal individuals and patients with motor disturbances.

Main Methods:

  • A 3D MRI technique was employed to measure the volumes of cerebral hemispheres (CH), basal ganglia, thalamus, internal capsule (BT), and myelinated white matter (WM).
  • Accuracy was validated using cadaver brains, yielding a mean percentage error of 2.33%.
  • The method was applied to 44 neurologically normal subjects (4 months–28 years) and 22 patients with motor disturbances (2–25 years).

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Main Results:

  • In normal individuals, CH, BT, and WM volumes increased with age, with WM volume increasing more slowly than CH volume.
  • Patients with spastic motor disturbances showed reduced volumes in CH, BT, and WM compared to normal controls.
  • Most patients with athetotic motor disturbances had CH volumes within 2 SD of normal controls.

Conclusions:

  • The developed 3D MRI method enables accurate measurement of cerebral volume.
  • This technique is valuable for assessing brain development and quantitatively analyzing delayed myelination.
  • The findings highlight volumetric differences in brain structures associated with spastic and athetotic motor disturbances.