Nonobstructive ventriculomegaly in the absence of IVH or cystic PVL was observed in neonates. 에서는 초기 선별 검사에서 발견되었으며, 세 번째 선별 검사 이후 발전했습니다. Two hundred fiftysix neonates had a US before discharge from the hospital were normal and abnormal.