OP25.10: Intra- and interobserver variability and reproducibility of biparietal diameter and crown rump length for ultrasound dating at 11-14 weeks of gestation
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Femur and humerus length in trisomy 21 fetuses at 11-14 weeks of gestation.
OBJECTIVE To determine the value of measuring fetal femur and humerus length at 11-14 weeks of gestation in screening for chromosomal defects. METHODS Femur and humerus lengths were measured using transabdominal ultrasound in 1018 fetuses immediately before chorionic villus sampling for karyotyping at 11-14 weeks of gestation. In the group of chromosomally normal fetuses, regression analysis ...
متن کاملUmbilical cord diameter at 11-14 weeks of gestation: relation to chromosomal defects.
OBJECTIVE To determine the potential value of measuring umbilical cord diameter (UCD) at 11-14 weeks of gestation in screening for chromosomal defects. METHODS The UCD was measured in 1323 fetuses immediately before chorionic villus sampling for karyotyping at 11-14 weeks of gestation. In the group of chromosomally normal fetuses, regression analysis was used to determine the association betw...
متن کاملReliability of fetal nasal bone length measurement at 11–14 weeks of gestation
BACKGROUND Nasal bone assessment has been incorporated into Down syndrome screening in first trimester. Several studies have established the normal reference values for fetal nasal bone length in the first trimester, which were found to be varied by population. However, the study on reliability of nasal bone length measurement was limited with contradictory results. This study aimed to investig...
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ژورنال
عنوان ژورنال: Ultrasound in Obstetrics and Gynecology
سال: 2007
ISSN: 0960-7692
DOI: 10.1002/uog.4683