Neural alterations in ADHD children as indicated by voxel-based cortical thickness and morphometry analysis

Area of Science:

• Neuroimaging
• Developmental Neuroscience
• Child Psychiatry

Background:

• Neuroimaging studies are crucial for understanding the neurobiology of Attention Deficit Hyperactivity Disorder (ADHD).
• A significant knowledge gap exists regarding the specific neuroanatomical alterations in children and adolescents with ADHD.

Purpose of the Study:

• To investigate and clarify the neuroanatomical differences in children and adolescents diagnosed with ADHD.
• Elucidate structural brain variations associated with ADHD in a pediatric population.

Main Methods:

• Employed voxel-based cortical thickness (VBCT) and voxel-based morphometry (VBM) analyses.
• Studied 18 non-medicated children/adolescents (aged 7.5-13 years) with ADHD (DSM-IV TR criteria).
• Compared neuroanatomical data with 18 age- and sex-matched healthy controls.

Main Results:

• VBCT identified reduced cortical thickness in the left superior frontal, left orbito-frontal, and left dorsal anterior cingulate cortex in ADHD participants.
• VBM revealed decreased gray matter volume in the left orbito frontal, left middle frontal/dorsolateral prefrontal, left middle temporal, and left cerebellum.
• Reduced white matter volume was observed in the left inferior frontal and left calcarine regions of ADHD subjects compared to controls.

Conclusions:

• Findings suggest potential abnormalities in neuroanatomical development patterns in children with ADHD.
• The study highlights specific brain regions affected by structural changes in pediatric ADHD.