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MR features of the developing perianterior horn structure including subcallosal fasciculus in infants and children

Hidetsuna Utsunomiya1, Yasuhiro Nakamura

  • 1Department of Diagnostic Radiology, Fukuoka University School of Medicine, 7-45-1, Nanakuma, Fukuoka, 814-0180, Japan. hide-uts@fukuoka-u.ac.jp

Neuroradiology
|July 11, 2007
PubMed

Insights

The magnetic resonance (MR) signal intensity of the perianterior horn structure (PAS) changes with age in children, reflecting histological development. These findings aid in understanding frontal lobe myelination abnormalities.

Area of Science:

  • Neuroimaging
  • Pediatric Radiology
  • Developmental Neuroscience

Background:

  • The perianterior horn structure (PAS) undergoes developmental changes in early life.
  • Understanding these changes is crucial for identifying neurological abnormalities in infants and children.

Purpose of the Study:

  • To characterize age-related alterations in the magnetic resonance (MR) signal intensity of the PAS.
  • To correlate MR signal patterns with histological features in pediatric subjects.

Main Methods:

  • Studied 69 infants and children (3 days to 9.4 years) with normal neurological development.
  • Acquired axial T1-weighted, T2-weighted, and FLAIR MR images.
  • Classified PAS signal intensity into four types based on comparisons with cortical signals.

Main Results:

  • Identified four signal intensity patterns (Types I-IV) in the PAS.
  • Observed a progression from Type I/II in younger children to Type III/IV in older children.
  • Found a potential correlation between Type I patterns and migrating glial cells, and Type IV patterns with subcallosal fasciculus (ScF) myelination.

Conclusions:

  • MR signal intensity of the PAS demonstrates age-dependent changes in children.
  • These signal changes likely reflect underlying histological development, including glial cell migration and myelination.
  • This study enhances understanding of normal and potentially abnormal myelination in the infant frontal lobe, particularly concerning the ScF.
Abstract

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