The Accuracy of 3D Ultrasound versus 2D in Predicting Placental Invasion Prenatally: Prospective Study

Abstract

Accurate antenatal diagnosis of morbid adherent placenta and placental invasion and degree of invasion of placenta, allowing multidisciplinary management at the time of delivery, has been shown to improve maternal and fetal outcomes. Placenta previa and previous cesarean section are the two most important known risk factors for morbid adherent placenta and placental invasion. This study aims to assess the accuracy of 3D ultrasound compared to 2D in predicting placental invasion in women with placenta previa. This prospective observational cohort study was conducted at Ain Shams University Maternity Hospital (outpatient clinic) in the period between January 2018 and November 2019. Regarding the most important criteria for 2D ultrasound in predicting placental invasion was loss of retroplacental space that show the highest significant non chance agreement with placental invasion. Regarding 3D ultrasound and power doppler the most important criteria in predictive of placental invasion and bladder invasion was disruption of the hyperechoic serosa -bladder interface had the highest significant non chance agreement.