Developmental delay in children: assessment with proton MR spectroscopy

Area of Science:

• Neuroscience
• Radiology
• Pediatrics

Background:

• Developmental delay often has an unknown cause, leading to frustration for clinicians and families.
• Lack of neuroimaging correlation complicates therapeutic decisions and prognosis.
• Proton MR spectroscopy (MRS) is explored for detecting abnormalities in structurally normal brains.

Purpose of the Study:

• To determine if proton MR spectroscopy can identify abnormalities in children with developmental delay and normal brain MRI.
• To assess the utility of proton MRS in cases where conventional neuroimaging is inconclusive.

Main Methods:

• Brain MRI and proton MR spectroscopy were performed on children with developmental delay (≤2 years and >2 years) and age-matched controls.
• Spectroscopy voxels were placed in the subcortical white matter of frontal and parieto-occipital lobes.
• Ratios of N-acetylaspartate (NAA)/creatine (Cr) and choline (Cho)/Cr were analyzed.

Main Results:

• No significant differences in NAA/Cr or Cho/Cr ratios were found in children ≤2 years old compared to controls.
• Children >2 years old with developmental delay showed decreased NAA/Cr ratios in frontal and parieto-occipital white matter.
• Elevated Cho/Cr ratios were observed in the frontal and parieto-occipital white matter of children >2 years old.

Conclusions:

• Proton MR spectroscopy revealed abnormalities in NAA/Cr and Cho/Cr ratios in children over 2 years old with developmental delay.
• Proton MR spectroscopy should be integrated into the neuroimaging evaluation for developmental delay.
• Further research is needed to establish proton MRS as a diagnostic tool and prognostic marker.