diameter

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Related to biparietal diameter: occipitofrontal diameter
References in periodicals archive ?
Construction of fetal charts for biparietal diameter, fetal abdominal circumference and femur length in Bangladeshi population.
Comparison of ultrasonic measurement of biparietal diameter and last menstrual period as a predictor of day of delivery in women with regular 28 day-cycles.
Hence to measure the biparietal diameter, an appropriate image of the fetal head is to be obtained.
At a 5% false-positive rate, 77% of Down syndrome pregnancies were detected by either of the "quadruple tests" when the gestational age was estimated by last menstrual period dating; detection improved to 79% when the dating was based on biparietal diameter ultrasound measurements.
Transcerebellar diameter can be practically applied in cases where it is difficult or impossible to calculate biparietal diameter, or cases where it is unsuitable because of the expressed molding of head.
These indices include biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL).
In the first trimester group, we evaluated the increase of fetal biparietal diameter (BPD) and reverse 'a' wave with ductus venosus Doppler.
femur length, biparietal diameter, head circumference and abdominal circumference were positively correlated with fetal kidney volume in our study.
Our aim was to study, among nonsmoking women, the influence of personal exposure to benzene in the air, seen as a marker of traffic-related air pollution, on measures of fetal growth (birth weight, head circumference, biparietal diameter) assessed during pregnancy by ultrasonography and at birth.
* Maximum transverse diameter of the skull-the largest horizontal diameter and transversal that it could measure, which, as shown in previous studies, coincides with the biparietal diameter (del Sol, 2005; 2006).
In this circumstance, although part of the skull is below the plane of the ischial spines, the widest diameter of the fetal head (usually the biparietal diameter) is still above the plane of the maternal pelvic brim, and the fetal head is unengaged.
We observed no differences between controls and twins for gestational age [controls, 16.3 (1) weeks; twins, 16.4 (1) weeks; P >0.05], fetal weight [controls, 179 (22) g; twins, 184 (28) g; P >0.05], head circumference [controls, 131 (12) mm; twins, 133 (9) mm; P >0.05], biparietal diameter [controls, 114 (10) mm; twins, 116 (8) mm; P >0.05], or transverse cerebellum diameter [controls, 15.4 (0.7) mm; twins, 15.6 (0.9) mm; P >0.05].