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The results of observations of the first 100 neonates at the University of Texas Health Science Center(Houston)who received magnetic resonance imaging of the central nervous system by means of a high-field image(1.5) are reported.All were assessed prospectively to be at risk for neurodevelopmental delay.This first report specifically addresses the appearance of primarily hemorrhagic intracranial lesions,including intraventricular hemorrhage(n=28),and extracerebral lesions,which include 3 cases of venous sincus thrombosis(n=20).The signal intensities of hemorrhage underwent a characteristic evolution with time with only minor variations in the study group.Magnetic resonance imaging detected direct evidence of hemorrhage for up to 2 months,but hemosiderin was detected as a late indicator of hemorrhage for up to 9 months.Magnetic resonance imaging was equal in benefit to head ultrasonography and computed tomography for the diagnosis of intraventricular hemorrhage,but magnetic resonance imaging was also able to approximate the time of onset of hemorrhage.Magnetic resonance imaging was superior for the evaluation of extracerebral hemorrhage;ultrasonography failed to detect any of these lesions and computed tomography detected only 3 of 7.Short-term neurological abnormality was assessed,but the ability of magnetic resonance imaging to predict long-term neurodevelopmental delay is unknown and is the subject of an ongoing project. |
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developmental retardation
dural sinus thrombosis
hematoma,epidural-cranial
hemorrhage,intracranial,newborn
intracranial hemorrhage
intraventricular hemorrhage
MRI
MRI,abnormal
MRI,CAT scan compared to
newborn,evaluation of
subarachnoid hemorrhage
subdural hematoma
subdural hematoma,neonates and infants
ultrasonography
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