While BPD is a valuable measurement, it has limitations: - Variability: BPD can be influenced by fetal head shape variations, such as in cases of dolichocephaly or brachycephaly. - Gestational age: BPD is less accurate for estimating gestational age in the third trimester compared to earlier in the pregnancy. - Isolated measurement: BPD should not be used in isolation; it is most effective when combined with other biometric parameters.
