Comparison of Intraventricular Hemorrhagic Findings in Preterm Infants Between Brain Ultrasonogram and Magnetic Resonance Imaging at Discharge.

Kim, Yong Kuk; Do, Sung Suk; Cho, Mi Hyun; Lee, Sang Geel

Abstract

PURPOSE: It has been customary to perform brain ultrasonogram (brain US) for the early detection of intraventricular hemorrhage (IVH) during intensive care of neonates. On the other hand magnetic resonance imaging (MRI) has been greatly restrictioned due to its complicated procedures. This study was conducted to identify changes in neonates' brain structure and to gain basic data for the long-term follow-up of neurologic sequelae in the future. For this purpose, the findings obtained from both brain US performed within one postnatal week and MRI at the time of discharge were compared and analysed.
METHODS
Brain US within one postnatal week and MRI at discharge were carried out on 67 neonates who were discharged from the neonatal intensive care unit of Fatima Hospital from July 01, 1996 to June 30, 1998. We compared and analysed IVH found in the brain US, and focal parenchymal hemorrhage, periventricular leukomalacia (PVL), basal ganglia hemorrhage, and encephalomalacia revealed the MRI performed at discharge.
RESULTS
It was found that out of 67 cases from the brain US, there were 13 with IVH of Grade l & ll, 11 with IVH of Grade lll or higher, one with focal parenchymal hemorrhage, and three with PVL. Also the MRI found seven with focal parenchymal hemorrhage, one with basal ganglia hemorrhage, six with PVL, three with encephalomalacia, and one with ventricular dilatation.
CONCLUSION
For infants with IVH of Grade lll or higher, MRI performed at discharge is considered to be very useful in identifying structural parenchymal abnormality and the presence or absence of its associated lesions as well as in carrying out long-term follow-up.