Magnetic resonance imaging brain yield in developmental delay: A developing country perspective.
MRI reveals an identifiable brain injury in nearly three-quarters of young children with developmental delay, with oxygen-loss damage leading the pack.
01Research in Context
What this study did
Doctors in a developing country scanned the brains of young children who had developmental delays. They used MRI to look for any damage or malformation that could explain the slow progress.
The study was simple: image every child who met the delay criteria, then list what the pictures showed.
What they found
Three out of four kids had a visible brain abnormality on MRI. The most common problem was hypoxic-ischemic encephalopathy—injury caused by lack of oxygen around birth.
Other findings included malformations, infections, and metabolic damage, but oxygen-loss injury topped the list.
How this fits with other research
Modabbernia et al. (2016) pooled 67 studies and found that neonatal acidosis, low Apgar scores, or oxygen treatment at birth each at least double the odds of later intellectual disability. Nikhil’s MRI data now show the actual brain scars behind those odds.
Chao-Qian et al. (2013) tracked infants after neonatal stroke—another oxygen-loss injury—and saw early motor deficits. The new study widens the lens: any hypoxic-ischemic change, not just stroke, can stall development.
Thapa (2017) reported that in Nepal the average age of cerebral palsy diagnosis is 5.5 years. Nikhil’s high MRI yield supports pushing for earlier brain imaging in low-resource settings so kids do not wait half a decade for answers.
Why it matters
If you work where MRIs are scarce, use these numbers to argue for scan priority in toddlers with unexplained delay. A positive image gives families a reason, guides therapy goals, and can unlock early-intervention funding. When the report mentions hypoxic-ischemic change, link it to birth history and start monitoring motor, visual, and cognitive milestones more closely—evidence shows these kids face higher risk across domains.
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02At a glance
03Original abstract
BACKGROUND: Developmental delay (DD) is an important neuro-morbidity in children affecting the quality of life. MRI plays a crucial role by delineating the underlying structural, metabolic, and genetic abnormalities. AIM: To determine the yield of MRI brain in delineating the various underlying abnormalities and etiological factors in children with DD and to correlate these findings with the clinical presentation. METHODS: This cross-sectional study enrolled 50 children with the developmental delay between 6 months to 6 years of age. OUTCOMES AND RESULTS: The mean age was 31.32 ± 20.56 months. The sensitivity of MRI was 72%. 81.3% of the children with microcephaly had abnormal MRI. The most common underlying etiology was hypoxic-ischemic encephalopathy (42%), followed by congenital/developmental defects and metabolic diseases (10% each). The most commonly involved region of the cerebral cortex was the occipital lobe (44%) because of the high occurrence of coexisting hypoglycemic brain injury, which is extremely common in developing countries and rare in developed countries, with 80% of them having visual abnormalities. Frontal lobe involvement was significantly more in children with abnormal motor findings and behavioral changes. Cortical grey matter abnormalities were significantly more in children with seizures. CONCLUSION AND IMPLICATIONS: It is to be emphasized that children with developmental delays should be evaluated with MRI whenever possible. Apart from hypoxic-ischemic encephalopathy, other etiologies should also be looked for.
Research in developmental disabilities, 2023 · doi:10.1016/j.ridd.2023.104518