Predicting Placental Pathologies by Ultrasound Imaging

Ultrasound measures to be collected include uterine artery (UtA) and umbilical artery (UA), systolic/diastolic (S/D) ratio, resistance index (RI), pulsatility index (PI) and presence of early diastolic notch.

In addition, a Verasonics ultrasound scanner will be used for ultra-sensitive Doppler imaging. Data will be collected on vessel density, periphery-to-center vessel density ratio (VDR) and microvessel morphology.