Instead of radiation, it bounces high-frequency sound waves off internal structures to create moving images of the baby, the placenta, and the uterus. It provides a beautiful, real-time window into the womb.
Common Indications for Obstetric Ultrasound
Your doctor or midwife may request an Obstetric Ultrasound for:
- Confirming a pregnancy and determining your exact due date.
- Checking the baby's heartbeat and movement.
- Screening for anatomical or genetic conditions.
- Checking the location of the placenta and the amount of amniotic fluid.
- Monitoring the baby's size and growth throughout the third trimester.
What exactly does an Obstetric Ultrasound show?
It shows the baby's body parts, internal organs, and movements. It also shows the surrounding environment inside the uterus, allowing doctors to ensure the baby has everything needed to thrive.
What happens during an Obstetric Ultrasound procedure?
- You will lie down on a comfortable exam table.
- The sonographer will apply a warm, water-based gel to your belly.
- A handheld device called a transducer will be gently glided over your skin to capture images.
- The sonographer will take measurements, and you will often be able to see your baby on a monitor.
Do I need to prepare for an Obstetric Ultrasound?
- For early pregnancy scans (like the dating scan), you usually need to arrive with a full bladder to lift the uterus for a better view.
- For later scans (like the 20-week anomaly scan), an empty or moderately full bladder is often preferred.
- Wear comfortable, two-piece clothing so the sonographer can easily access your belly.
How long does an Obstetric Ultrasound take?
Most scans take between 20 and 30 minutes, though a detailed anomaly scan may take slightly longer.
Are there different types of Obstetric Ultrasound scans?
Yes, the three main routine scans include:
- Dating Scan (10-14 weeks): Checks how far along you are and the baby's early development.
- Anomaly Scan (20-22 weeks): A detailed check of the baby's physical development and anatomy.
- Growth Scan (Third trimester): Monitors the baby's size, fluid levels, and position.
Will the scan be painful?
No, it is completely painless. The gel might feel slightly cool, and having a full bladder for early scans can be mildly uncomfortable.
Conclusion
An Obstetric Ultrasound is a safe, routine, and memorable way to monitor your baby's journey from conception to birth. It provides essential details that help ensure a healthy pregnancy.