The Ob/Gyn Ultrasound Services Unit uses the most advanced ultrasound technology to evaluate fetal development and identify fetal abnormalities during pregnancy. The range of fetal ultrasonography services includes diagnostic procedures, such as amniocentesis and chorionic villi sampling (CVS); prenatal diagnosis through biophysical profile and non-stress testing; first, second and third trimester evaluations; and screenings for Down syndrome, ectopic pregnancy, multiple pregnancy and fetal anomalies. If fetal or maternal complications are detected during an ultrasound, physicians coordinate care with expert specialists to ensure the health of the mother and the baby.