OC14.03: BOLD MRI in fetal sheep: ductus venosus shunting during hypoxia

Abstract

genitourinary malformations (7%); 15 gastrointestinal anomalies (6%) and 71 miscellaneous (26%). In 244 (89%) both ultrasound and MRI findings were in agreement with postnatal diagnoses. MRI changed the US diagnosis in 16 (5,8%) cases. Relevant additional information were provided in 7 (2,5%) cases: 3 central nervous system anomalies; 3 thoracic defects; 1 abdominal malformations. Ultrasound was more accurate than MRI in 4 (1,4%) cases: 1 case of placenta previa; 1 exomphalos; 1 CCAM in a twin pregnancy; 1 hypoplasia of corpus callosum. In 9 (3,2%) cases, the diagnoses at both US and MR imaging were not correlated with postnatal outcome. Conclusions: Prenatal US remains the primary fetal imaging modality. Prenatal diagnosis of even complex malformations was accurate in over 90% of cases. In a few selected patients in our experience, particularly in late pregnancy, MRI may however add relevant information.