Three-dimensional power Doppler ultrasonography during pregnancy

Objectives: to present the appearance of fetal and placental vascular anatomic structures by three-dimensional power Doppler ultrasonography. Methods: three-dimensional multiplanar imaging, surface rendering, and volume rendering were combined with power Doppler ultrasonography to show the methods, imaging artifacts, and diagnostic potential of this technology during pregnancy. Results: fetuses with normal and abnormal vascular anatomic structures were evaluated by three-dimensional power Doppler ultrasonography. The combination of several imaging modalities (e.g., threedimensional multiplanar imaging, surface rendering, and volume rendering) with power Doppler ultrasonography is shown. Conclusions: three-dimensional power Doppler ultrasonography is an important adjunctive method that can be used to characterize normal vascular development and circulatory anomalies of the fetus