Imaging technology for fetal diagnosis has rapidly evolved, but the clinical applicability of newer fetal imaging technology has not been defined. Two-dimensional ultrasonography, the modality most commonly used for pregnancy evaluation, provides cost-effective, real-time imaging, offers high resolution, and is considered safe for mother and fetus. Three-dimensional/four-dimensional ultrasonography is increasingly available and also has been successfully used for detection of fetal structural anomalies involving the central nervous system, face, limbs, thorax, and spine; however, few studies examine outcomes.