There has been a steep rise in the diagnostic capability of ultrasound over the last few years. With the availability of advanced ultrasound equipments and highly skilled trained operators, three-dimensional ultrasound is now becoming increasingly integrated in the assessment of fetus based on its potential advantage. Its potential advantages render this modality helpful but we need to test its accuracy and reliability.The aim of our study was to determine if the examination of the 3D/4D volume datasets adds any diagnostic information to what is provided by 2D Ultrasound examination in relation to the definitive diagnosis which postnatal/postmortem examination.In our study we compared the diagnostic information yielded from the use of 3D ultrasound to that of 2D in the diagnosis of fetal abnormalities in 146 women with anomalous fetuses