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Of the 72 cases, 40 had unequivocally abnormal MRI and 15 had equivocal scans. Of the 21 controls, one had abnormal and five equivocal MRI. Abnormalities of ventricles, corpus callosum, and white matter were especially common in cases. Mo re brain lesions were identified by MRI than by neonatal ultrasonography. The cases had significantly more reading, adjustment, and neurological impairments than controls, but their behaviour was significantly related to MRI abnormality. Individuals bor n very preterm show an excess of neurocognitive and behavioural problems in adolescence, and more than half have abnormal MRI brain scans. |
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