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Related Experiment Video

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How to Measure Cortical Folding from MR Images: a Step-by-Step Tutorial to Compute Local Gyrification Index
09:57

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LONGITUDINAL MULTI-SCALE MAPPING OF INFANT CORTICAL FOLDING USING SPHERICAL WAVELETS.

Dingna Duan1,2, Islem Rekik2,3, Shunren Xia1

  • 1Key Laboratory of Biomedical Engineering of Ministry of Education, Zhejiang University, China.

Proceedings. IEEE International Symposium on Biomedical Imaging
|November 4, 2017
PubMed
Summary
This summary is machine-generated.

Infant brain development involves complex changes in cortical folding. This study introduces a multi-scale wavelet method to quantify these changes, revealing scale-specific patterns in brain development during the first two years.

Keywords:
cortical foldingcurvatureinfantlongitudinal developmentspherical wavelets

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Medical Imaging

Background:

  • Infant brain development, including cognition and motor functions, is linked to cortical folding.
  • Longitudinal changes in cortical folding during infancy are not well understood.
  • Cortical folding complexity varies across different spatial scales.

Purpose of the Study:

  • To develop and apply a multi-scale method for mapping longitudinal changes in infant cortical folding.
  • To quantitatively analyze cortical folding patterns across different spatial frequencies during the first two postnatal years.

Main Methods:

  • A curvature-based, multi-scale analysis using spherical wavelets was developed.
  • Cortical curvature maps were decomposed into multiple spatial-frequency scales.
  • Scale-specific wavelet power was measured as an index of cortical folding degree.
  • The method was applied to 219 longitudinal MRI scans from 73 healthy infants (0, 1, and 2 years).

Main Results:

  • Cortical folding changes were found to be both scale-specific and region-specific.
  • Primary folds tended to flatten at coarser spatial frequencies.
  • Minor folds became more convoluted at finer spatial frequencies.

Conclusions:

  • The study provides a novel method for analyzing infant cortical folding dynamics.
  • Significant longitudinal changes in cortical folding occur during infancy, varying by scale and brain region.
  • These findings offer insights into the developmental trajectory of the infant brain's structural complexity.