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Screening for Detection of Intra‐Uterine Growth Retardation by Means of Ultrasound

Abstract. In a two‐stage ultrasound screening program the gestational age was assessed by measurement of the fetal crown‐rump length in early pregnancy. At an adjusted gestational age between 32 and 35 completed weeks the biparietal diameter, the abdominal circumference, the abdominal area and the ratio between fetal head area and abdominal area were estimated by means of ultrasound measurement. ‘Acute’ fetal weight was estimated by calculations from biparietal diameter and abdominal diameters. Percen‐tile curves were constructed for these parameters and cutoff limits were tested for the predictability of intra‐uterine growth retardation of the fetus.