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. 1994 Mar;15(3):459-64.

MR of fetal central nervous system abnormalities

W T Yuh  1 , H D Nguyen, D J Fisher, E T Tali, F Gao, T M Simonson, S C Kao, C P Weiner
Affiliations

MR of fetal central nervous system abnormalities

W T Yuh et al. AJNR Am J Neuroradiol. 1994 Mar.

Abstract

Purpose: To investigate whether MR can provide additional information on fetuses with central nervous system abnormalities as demonstrated by ultrasonography.

Methods: Fetal MR examinations were studied prospectively in 22 pregnant women whose fetuses showed evidence of anomalies on ultrasound performed in the High-Risk Obstetric Clinic.

Results: In 19 of 22 cases, postpartum confirmatory diagnoses were obtained by MR or CT examinations, autopsy, or surgery. In general, the image quality of MR is comparable with that of ultrasound. However, in six of 22 cases (27%), MR provided additional information that altered the ultrasound diagnosis; these included cases of infarction, diastematomyelia, normal hemimegalencephaly with early myelination, Dandy-Walker variant, and lipoma. All of these cases had postpartum confirmation. The additional information changed the treatment in three of six patients (no intervention or elective abortion).

Conclusions: In certain situations MR can add valuable information to that obtained by sonography in the evaluation of the fetal central nervous system.

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