FIG 2. Images show moderate to severe white matter injury in a premature neonate born 29.1 weeks after conception and studied at 32 weeks postconceptional age

A, Coronal view transfontanel ultrasonogram shows small areas of hypoechogenicity in the periventricular white matter, indicating small areas of cavitation, in addition to pronounced ventriculomegaly (arrowhead).

B and C, Corresponding MR images (spoiled gradient-echo volumetric images) show small areas of T1 hypointensity, indicating cavitation in the periventricular white matter (B, arrow), in addition to multiple small foci of T1 hyperintensity in the absence of marked T2 hypointensity, which were thought to represent astrogliosis in the periventricular white matter (C, arrow). The degree of ventriculomegaly is similar on the ultrasonogram and MR images. Note that the areas of T1 hyperintensity are more extensive than the small cystic lesions evident on the ultrasonogram or MR images.