Reproducibility of measurement of fetal biparietal diameter by ultrasonic cephalometry.
D002508:Cephalometry; D005260:Female; D005333:Fetus / Q000502:physiology; D005865:Gestational Age; D006128:Growth; D006801:Humans; D008722:Methods; D010294:Parietal Bone; D011247:Pregnancy; D013997:Time Factors; D014463:Ultrasonography