Measurements by ultrasound of the biparietal diameter of the fetal head during pregnancy are a reliable guide to fetal growth. As a ready means of comparison with the normal we constructed from 4,170 measurements in 1,394 cases a curve showing the percentiles distribution of biparietal diameters for each week of gestation.

background: abdominal circumference (ac), biparietal diameters (bpd) and femoral length (fl) are now the main parameters used to obtain estimated fetal weight (efw). although the role of soft tissue parameters in determining fetal weight was proved but clinical attention to mid-thigh soft tissue thickness (stt) is limited. objective: to find the impression of stt on birth weight (bw) and repres...

The small size of the head and abdomen in a growth-retarded fetus may lead to inaccurate estimates of gestational age. Therefore, we conducted a study to assess the diameters of the aortic root and pulmonary artery in such fetuses. During the study period, we measured these great vessel diameters at the level of the semilunar valves on all third-trimester obstetric sonograms in which intrauteri...

OBJECTIVE The purpose of this study was to establish longitudinal reference ranges for fetal ultrasound biometry measurements and growth parameters in twin pregnancies. METHOD A total of 200 uncomplicated twin pregnancies before 21 weeks of gestation were recruited for this prospective, longitudinal study. Women who abandoned follow-up, pregnancies with unknown outcomes or pregnancies with co...

A girl with Wiedemann-Rautenstrauch syndrome was born to a non-consanguineous couple. During the pregnancy, growth retardation particularly in the biparietal and abdominal diameters but not the femoral length was detected through serial ultrasound scans. When the woman became pregnant again, in spite of having been assessed as having a 25% risk of recurrence, the prenatal findings seen in her p...

BACKGROUND AND PURPOSE The application of volumetric techniques to preterm infants has revealed brain volume reductions. Such quantitative data are not available in routine neonatal radiologic care. The objective of this study was to develop simple brain metrics to compare brain size in preterm and term infants and to correlate these metrics with brain volumes from volumetric MR imaging techniq...

Fetal measurements, especially fetal foot length, were correlated with fetal age--as measured by last menstrual dates--for 1800 tissue specimens obtained after dilatation and evacuation abortion. These observations were compared with Streeter's results from 1920. Fetal ages ranged from ten through 26 completed menstrual weeks. Fetal measurements including weight, knee-to-heel length, biparietal...