Correlation of Placental Thickness With Gestationalage and Fetal Parameters

Background: Placental thickness is a critical sonographic parameter reflecting fetal growth and well-being. It may serve as a non-invasive marker to estimate gestational age and assess fetal development. Aim: To evaluate the correlation between placental thickness and gestational age, along with key fetal biometric parameters such as BPD, HC, AC, and FL. Method: A cross-sectional analytical study was conducted on 450 antenatal women (14–40 weeks gestation) at Pacific Institute of Medical Sciences, Udaipur. Placental thickness was measured at the level of umbilical cord insertion and correlated with fetal parameters using Pearson's coefficient and regression analysis. Result: Placental thickness showed a strong positive correlation with gestational age (r > 0.9, p < 0.001) and fetal biometric measurements. Thickness increased progressively with gestation, particularly up to 36 weeks. Conclusion: Placental thickness is a reliable, simple, and non-invasive ultrasound marker for estimating gestational age and fetal growth.