Apparent Diffusion Coefficient Levels and Neurodevelopmental Outcome in Fetuses with Brain MR Imaging White Matter...

Area of Science:

• Neuroimaging
• Fetal Medicine
• Pediatric Neurology

Background:

• White matter T2 hyperintense signal on fetal MRI is a perplexing finding.
• Identifying etiologies and their impact on fetal brain development is crucial.

Purpose of the Study:

• Determine main etiologies of fetal white matter T2 hyperintense signal.
• Examine if different etiologies correlate with distinct ADC values.
• Assess the association between T2 hyperintense signal and developmental outcomes.

Main Methods:

• Prospective cohort study of 44 fetal brain MRI scans.
• Collected clinical data and measured ADC values in brain lobes.
• Neurodevelopmental assessments using Vineland Adaptive Behavior Scales II.

Main Results:

• Congenital cytomegalovirus (CMV) infection accounted for half of cases; others were idiopathic.
• CMV-positive group showed parietal lobe involvement and increased temporal/parietal ADC values, suggesting edema.
• No significant association found between neurodevelopmental outcomes and etiologies or ADC values.

Conclusions:

• Fetal brain MRI with T2 hyperintense signal and CMV infection shows increased ADC values, indicative of potential edema.
• Further research is needed to understand the link between these MRI findings and long-term neurodevelopmental outcomes.