Journal
ARCHIVES OF DISEASE IN CHILDHOOD-FETAL AND NEONATAL EDITION
Volume 100, Issue 4, Pages F293-F300Publisher
BMJ PUBLISHING GROUP
DOI: 10.1136/archdischild-2014-306129
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Objective To investigate detection ability and feasibility of serial cranial ultrasonography (CUS) and early MRI in preterm brain injury. Design Prospective cohort study. Setting Level III neonatal intensive care unit. Patients 307 infants, born below 29 weeks of gestation. Methods Serial CUS and MRI were performed according to standard clinical protocol. In case of instability, MRI was postponed or cancelled. Brain images were assessed by independent experts and compared between modalities. Main outcome measures Presence of preterm brain injury on either CUS or MRI and discrepant imaging findings on CUS and MRI. Results Serial CUS was performed in all infants; early MRI was often postponed (n=59) or cancelled (n=126). Injury was found in 146 infants (47.6%). Clinical characteristics differed significantly between groups that were subdivided according to timing of MRI. 61 discrepant imaging findings were found. MRI was superior in identifying cerebellar haemorrhage; CUS in detection of acute intraventricular haemorrhage, perforator stroke and cerebral sinovenous thrombosis. Conclusions Advanced serial CUS seems highly effective in diagnosing preterm brain injury, but may miss cerebellar abnormalities. Although MRI does identify these lesions, feasibility is limited. Improved safety, better availability and tailored procedures are essential for MRI to increase its value in clinical care.
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