Minimal white matter injury shown on ultrasonograms and MR images of premature neonate born 31.1 weeks after conception and studied at 32.9 weeks postconceptional.

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Presentation transcript:

Minimal white matter injury shown on ultrasonograms and MR images of premature neonate born 31.1 weeks after conception and studied at 32.9 weeks postconceptional age.A, Coronal view transfontanel ultrasonograms show diffuse foci of mildly increased echogen... Minimal white matter injury shown on ultrasonograms and MR images of premature neonate born 31.1 weeks after conception and studied at 32.9 weeks postconceptional age.A, Coronal view transfontanel ultrasonograms show diffuse foci of mildly increased echogenicity (less than that of the choroid plexus) in addition to irregularity of the lateral borders of the periventricular white matter (arrowheads).B, Corresponding MR images (spoiled gradient-echo volumetric images) show a few small foci of T1 hyperintensity in the absence of marked T2 hypointensity, which were thought to represent astrogliosis in the periventricular white matter without cavitation (arrow). The abnormalities shown by MR imaging and ultrasonography are not anatomically concordant, although both were graded as minimal white matter abnormalities. Steven P. Miller et al. AJNR Am J Neuroradiol 2003;24:1661-1669 ©2003 by American Society of Neuroradiology