Elucidation of Brain Morphogenesis Using Quantitative Brain Magnetic Resonance Imaging in Children

Area of Science:

• Pediatric Neurology
• Neuroimaging
• Developmental Neuroscience

Background:

• Quantitative magnetic resonance imaging (qMRI) provides noninvasive, high-resolution brain assessments crucial for pediatric neurodevelopment research.
• Advances allow detailed characterization of brain morphology, including gray/white matter, cortical thickness, and fiber integrity.

Purpose of the Study:

• To review the application of qMRI in pediatric neurodevelopment research.
• To highlight advances in structural analysis and diffusion tensor imaging (DTI).
• To discuss challenges and future directions for clinical translation.

Main Methods:

• Utilizes anatomical structure analysis and diffusion-weighted tractography for brain morphology assessment.
• Employs automated processing pipelines (e.g., FreeSurfer, FSL, CIVET) for large-scale analyses.
• Incorporates diffusion tensor imaging (DTI) to study white matter microstructure and connectivity.

Main Results:

• qMRI has identified structural biomarkers in neurodevelopmental disorders, such as altered nucleus accumbens volume and amygdala overgrowth in autism spectrum disorder (ASD).
• DTI reveals neurodevelopmental trajectories and disorder-specific connectivity alterations.
• Early indicators like amygdala overgrowth and glymphatic dysfunction may predict ASD onset.

Conclusions:

• Standardization of imaging protocols and harmonization are crucial for overcoming inter-scanner variability and enabling longitudinal, patient-specific assessments.
• qMRI integration into clinical workflows promises early diagnosis, monitoring, and therapeutic stratification for pediatric neurological disorders.
• Comprehensive morphometric and diffusion-based profiling will advance brain morphogenesis understanding and precision medicine in pediatric neurology.