MRI of perinatal brain injury |
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Authors: | Mary Rutherford Miriam Martinez Biarge Joanna Allsop Serena Counsell Frances Cowan |
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Institution: | (1) Robert Steiner MR Unit, Perinatal Imaging, MRC Clinical Sciences Centre, Hammersmith Hospital, Imperial College, Du Cane Road, London, W12 OHS, UK;(2) Dept of Neonatology, La Paz University Hospital, Paseo de la Castellana, 261, E-28046 Madrid, Spain;(3) Robert Steiner MR Unit, Neonatal Medicine, MRC Clinical Sciences Centre, Hammersmith Hospital, Imperial College, Du Cane Road, London, W12 OHS, UK;(4) Dept of Paediatrics, Hammersmith Hospital, Imperial College, Du Cane Road, London, W12 OHS, UK |
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Abstract: | MRI is invaluable in assessing the neonatal brain following suspected perinatal injury. Good quality imaging requires adaptations
to both the hardware and the sequences used for adults or older children. The perinatal and postnatal details often predict
the pattern of lesions sustained and should be available to aid interpretation of the imaging findings. Perinatal lesions,
the pattern of which can predict neurodevelopmental outcome, are at their most obvious on conventional imaging between 1 and
2 weeks from birth. Very early imaging during the first week may be useful to make management decisions in ventilated neonates
but brain abnormalities may still be subtle using conventional sequences. Diffusion-weighted imaging (DWI) is very useful
for the early identification of ischaemic tissue in the neonatal brain but may underestimate the final extent of injury, particularly
basal ganglia and thalamic lesions. MR imaging is an excellent predictor of outcome following perinatal brain injury and can
therefore be used as a biomarker in interventional trials designed to reduce injury and improve neurodevelopmental outcome. |
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