A growth scan in pregnancy, also called the third trimester scan, is done in the last trimester to check the development and well-being of the baby. The ultrasound scan that produces a 2-D, black and white image of the baby is also done to determine the amount of amniotic fluid in the womb and position of the placenta. It can be done once or many times (as per the requirement). The first foetal growth scan is suggested between 28 weeks and 32 weeks of pregnancy to determine the foetal wellbeing.

The second growth scan and colour Doppler studies are done closer to the due date, between 36 and 40 weeks.

The scan is performed in the same way as an abdominal ultrasound. You will be asked to lay down and uncover your belly. The sonographer will apply gel over your abdomen and then examine you using a probe.

The ultrasonologist will perform the following measurements on the baby which help determine the growth and weight of the baby

• Biparietal diameter (BPD), which is the diameter of the baby’s head
• Head circumference (HC), which is the length measured around the baby’s head
• Abdominal circumference (AC), which is the length measured around the baby’s abdomen
• Femur length (FL), which measures the length of the thigh bone (femur)

The ultrasonologist then looks at the amount of amniotic fluid around the baby and notes the location of the placenta.

How long does a growth scan take?

A growth scan usually takes about 15-20 minutes.

How do you interpret a growth scan report?

“Your report will contain data about fetal biometry (BPD, HC, AC and FL measurements) and the estimated weight, besides the baby’s position and the level of amniotic fluid.

“The pregnancy week and age of the baby is also calculated and reported”.

The test is conducted by our Gynaecologist in the center.