Report on the 11- to 13+6-Week Ultrasound Evaluation as a Screening Test for Trisomy 21 in Singleton Pregnancies Borrell A et al. - Evaluations of the nasal bone, ductus venosus, tricuspid valve function, frontomaxillary facial angle, hyperechogenic bowel, intracardiac echogenic focus, and renal pelvis fullness can become part of the 11- to 13+6-week screening test if the imaging protocols are standardized. The role of 3-D ultrasound during the 11- to 13+6-week ultrasound evaluations is under investigation. [more...]
