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Related Experiment Videos

Normal brain maturation in MRI.

K Hayakawa1, Y Konishi, M Kuriyama

  • 1Department of Radiology, Fukui Medical School, Japan.

European Journal of Radiology
|May 1, 1991
PubMed
Summary

This study used MRI to track brain maturation and myelination in children and adults. Findings reveal distinct T1 and T2 signal changes indicating normal brain development stages.

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Area of Science:

  • Neuroimaging
  • Developmental Neuroscience
  • Pediatric Radiology

Background:

  • Normal brain maturation is a complex process involving myelination.
  • Assessing myelination quantitatively aids in understanding neurodevelopmental trajectories.
  • Magnetic Resonance (MR) imaging offers valuable insights into brain tissue changes.

Purpose of the Study:

  • To evaluate normal brain maturation using MR imaging in neonates to 2-year-olds.
  • To quantitatively assess the myelination process in the centrum semiovale across different age groups.
  • To establish imaging criteria for assessing brain maturation in infants.

Main Methods:

  • MR imaging was performed on 36 neonates to 2-year-olds, 50 children (6 months–15 years), and 40 adults (16–60 years).
  • Spin echo pulse sequences on a 0.35 T superconducting MR unit were utilized.
  • T1- and T2-weighted images were analyzed to define maturation stages.

Main Results:

  • Three distinct maturation stages were observed on T1-weighted images (neonate, 1-6 months, adult configuration after 6-7 months).
  • Three maturation stages were defined on T2-weighted images (neonatal pattern first 6 months, signal inversion 6-18 months, adult appearance after 18 months).
  • Myelination in the centrum semiovale showed rapid progression in the first 3 years, followed by slow progression until 20-30 years.

Conclusions:

  • Combined T1- and T2-weighted MR imaging effectively assesses brain maturation in infants under 2 years.
  • The myelination process is a prolonged event extending into early adulthood.
  • This study provides a quantitative framework for evaluating normal brain development via MR imaging.

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