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Abstract
To compare the value of serial cranial ultrasound (US) with a single magnetic resonance imaging (MRI) before discharge in very low birth weight preterm infants to predict cerebral palsy (CP).Infants who weighed <1250 g at birth and were <30 weeks' gestational age underwent conventional brain MRI at near term (36-40 weeks' postmenstrual age) using 1.5 Tesla MRI scanner. Sagittal and axial T1 and T2 fluid attenuated inversion recovery and gradient recalled echo images were obtained. Cranial US was also obtained at least twice during the first 2 weeks of life. MRI and US images were interpreted by 2 independent radiologists, who were masked to clinical outcome, and scored as follows: category 1, no abnormality; category 2, subependymal hemorrhage or mineralization; category 3, moderate to severe ventriculomegaly; category 4, focal parenchymal abnormality with or without ventriculomegaly. For the purpose of this study, 1 and 2 were categorized as "normal," and 3 and 4 were categorized as "abnormal." The infants were assessed at a mean age of 20 and 31 months using the Amiel-Tison standardized neurodevelopmental examination.The sensitivity and specificity of MRI for predicting CP were 71% and 91% at 20 month and 86% and 89% at 31 months, respectively. The sensitivity and specificity of US for predicting CP were 29% and 86% at 20 months and 43% and 82% at 31 months.As a predictor of outcome for CP, MRI at near-term in very low birth weight preterm neonates is superior to US. However, both US and MRI demonstrate high specificity.
View details for DOI 10.1542/peds.2003-0772-L
View details for Web of Science ID 000224242200034
View details for PubMedID 15466096