Although, to this date, there have been a number of human placental studies that concerned the evaluation of placental 3 dimensional power Doppler vascularization with the use of VOCAL technique, but there was no one in which placental vasculature has been compared between the sonobiopsy and whole placental volume.
In this study is tested the validity of placental vascular indices obtained from placenta ultrasonographic sphere biopsy and entire placenta investigation.