Abstract
On the basis of MRI examination in 88 neonates and infants with perinatal asphyxia, we defined 6 different patterns on T2-weighted images: pattern A-scattered hyperintensity of both hemispheres of the telencephalon with blurred border zones between cortex and white matter, indicating diffuse brain injury; pattern B-parasagittal hyperintensity extending into the corona radiata, corresponding to the watershed zones; pattern C-hyper-and hypointense lesions in thalamus and basal ganglia, which relate to haemorrhagic necrosis or iron deposition in these areas; pattern D-periventricular hyperintensity, mainly along the lateral ventricles, i.e. periventricular leukomalacia (PVL), originating from the matrix zone; pattern E-small multifocal lesions varying from hyper-to hypointense, interpreted as necrosis and haemorrhage; pattern F-periventricular centrifugal hypointense stripes in the centrum semiovale and deep white matter of the frontal and occipital lobes. Contrast was effectively inverted on T1-weighted images. Patterns A, B and C were found in 17%, 25% and 37% of patients, and patterns D, E and F in 19%, 17% and 35%, respectively. In 49 patients a combination of patterns was observed, but 30% of the initial images were normal. At follow-up, persistent abnormalities were seen in all children with patterns A and D, but in only 52% of those with pattern C. Myelination was retarded most often in patient with diffuse brain injury and PVL (patterns A and D).
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Baenziger, O., Martin, E., Steinlin, M. et al. Early pattern recognition in severe perinatal asphyxia: a prospective MRI study. Neuroradiology 35, 437–442 (1993). https://doi.org/10.1007/BF00602824
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DOI: https://doi.org/10.1007/BF00602824