Craniometric measures during development using MRI

Area of Science:

• Neuroscience
• Human Development
• Radiology

Background:

• Understanding typical brain development is crucial for identifying atypical growth patterns.
• Previous studies often relied on limited datasets or post-mortem analyses.

Purpose of the Study:

• To characterize developmental changes in brain volume and shape using MRI in a cohort from infancy to adolescence.
• To investigate age- and sex-related variations in craniometric measures and brain configuration.

Main Methods:

• Magnetic Resonance Imaging (MRI) was used to obtain 20 craniometric measures in 118 individuals (1 week to 18.7 years).
• Clinical data including age, sex, and occipito-frontal circumference (OFC) were collected.
• Analysis focused on age- and sex-related changes in brain size, shape, and specific ratios.

Main Results:

• Occipito-frontal circumference (OFC) has increased compared to 40 years ago, correlating with increased stature.
• Significant developmental changes in brain volume and shape were observed, most pronounced in infancy.
• Sex differences in brain volume and shape were identified, indicating sexual dimorphism; cerebellar development lagged behind cerebral hemispheres.

Conclusions:

• Brain development involves dynamic changes in volume and shape throughout infancy, childhood, and adolescence.
• The study provides normative data for brain development, highlighting variations and sex differences.
• Findings facilitate comparisons between contemporary and historical human brain measurements.