An obstetric ultrasound scan or fetal ultrasound scan uses sound waves to build a picture of the baby in the womb. There are two ways of performing an ultrasound scan:
Most obstetric ultrasound scans are performed via the transabdominal approach. Occasionally, the doctor may use a transvaginal approach in early pregnancy if the transabdominal scan cannot provide a good image. During the second or third trimesters, transvaginal ultrasound scans can measure the length of the cervix more accurately, and this helps to assess the risk of preterm birth.
Obstetric ultrasound scans are not painful. They do not cause harm to the baby even if performed transvaginally, and can be carried out at any stage of the pregnancy. For many women, obstetric ultrasound scans are the highlights of antenatal visits. It is very exciting for expectant parents to see the baby in the womb, waving hands and kicking legs. Apart from being a joyful experience, antenatal ultrasound scans have their own medical purposes, depending on the stage of the pregnancy when the scans are performed.
The fetal structural scan or morphology scan is a special obstetric ultrasound scan, and should be conducted by a maternal fetal medicine subspecialist. With the exception of this scan, we can offer all other obstetric scans.
All our consultation rooms are equipped with an ultrasound scan machine. An overhead monitor is installed in each room so that mothers can watch the entire ultrasound scan examination. Apart from allowing mothers to see the baby, this arrangement also helps the doctor to explain the ultrasound scan examination findings.