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MRI features of cerebral lesions and cognitive functions in preterm spastic diplegic children
E Fedrizzi1, M Inverno, M G Bruzzone
1Department of Developmental Neurology, Istituto Neurologico Nazionale C. Besta, Milan, Italy.
Insights
Preterm spastic diplegic children show specific visuoperceptual deficits linked to brain lesions. Early MRI can predict cognitive dysfunction in these children, aiding early intervention.
Area of Science:
- Neurology
- Developmental Pediatrics
- Neuroimaging
Background:
- Spastic diplegic cerebral palsy in preterm infants is associated with cognitive impairments.
- Understanding the relationship between specific brain lesions and cognitive deficits is crucial for targeted interventions.
Purpose of the Study:
- To investigate the correlation between cognitive impairment patterns and cerebral lesion features on MRI in preterm spastic diplegic children.
- To determine if early MRI findings can predict specific neuropsychological outcomes.
Main Methods:
- Cognitive profiles were assessed using the Wechsler Scale in 30 preterm spastic diplegic children (aged 6y 8m to 14y 7m).
- MRI scans were analyzed for periventricular leukomalacia, ventricular dilatation, white matter reduction, optic radiation involvement, and corpus callosum thinning.
- Correlations between IQ scores (Full Scale, Verbal, Performance) and MRI features were examined.
Main Results:
- All children had periventricular leukomalacia.
- A significant difference between Verbal and Performance IQ indicated visuoperceptual deficits.
- MRI findings (ventricular dilatation, white matter reduction, optic radiation, corpus callosum thinning) correlated with Full Scale and Performance IQ, but not Verbal IQ.
Conclusions:
- Preterm spastic diplegic children exhibit specific visuoperceptual impairments.
- Early MRI (ages 1-2 years) can predict cognitive dysfunction patterns.
- Identifying these patterns facilitates early intervention programs for improved outcomes.
Abstract:
The aim of this study is to further clarify the relation between the pattern of cognitive impairment in spastic diplegic children born preterm and MRI features of cerebral lesions. The cognitive profile by Wechsler Scale of a sample of 30 children aged 6 years, 8 months to 14 years, 7 months was assessed, and the correlations between the Full Scale, Verbal, and Performance IQ and periventricular leukomalacia features on MRI were investigated. A significant difference was observed between the mean Verbal and Performance IQ, indicating a specific failure in the visuoperceptual functions of spastic diplegic children born preterm. Periventricular leukomalacia was detected in all children. The severity of ventricular dilatation, the degree and extent of white matter reduction, optic radiation involvement, and the thinning of the posterior corpus callosum correlated significantly with the Full Scale and Performance IQ: no correlation was observed between the Verbal IQ and any of the MRI features analyzed. In spastic diplegic children, an MRI examination between the ages of 1 and 2 years may be helpful in predicting a specific neuropsychological pattern of dysfunction and in defining an early intervention program.