Obstetric Ultrasound
Obstetrics and Gynecology Associates Of Central Florida
Obstetric Ultrasound: Procedure Overview
An obstetric ultrasound is a safe, non-invasive imaging test used during pregnancy to monitor the health and development of your baby. It uses sound waves to create real-time images of the uterus, placenta, and growing baby.
Ultrasound is an important part of prenatal care and helps your provider:
- Confirm pregnancy and due date
- Monitor fetal growth and development
- Check the baby’s heartbeat
- Evaluate the placenta and amniotic fluid
- Identify multiple pregnancies (twins, etc.)
- Screen for certain birth defects
Obstetric ultrasounds are painless and do not use radiation.
Frequently Asked Questions (FAQ)
Is obstetric ultrasound safe?
Yes. Ultrasound uses sound waves, not radiation, and is considered very safe for both mother and baby when performed by trained medical professionals.
When are ultrasounds performed during pregnancy?
Common timing includes:
- Early ultrasound (6–10 weeks): Confirm pregnancy and establish due date
- First trimester screening (11–14 weeks): Optional genetic screening
- Anatomy scan (18–22 weeks): Detailed evaluation of fetal anatomy
- Third trimester ultrasound: Assess growth, position, and amniotic fluid if needed
Your provider will recommend ultrasounds based on your pregnancy.
What is the difference between transabdominal and transvaginal ultrasound?
- Transabdominal ultrasound: A probe is moved over the abdomen.
- Transvaginal ultrasound: A slender probe is gently inserted into the vagina for clearer images in early pregnancy.
Both methods are safe and commonly used.
How long does the appointment take?
Most ultrasounds take 20–45 minutes, depending on the type and complexity of the exam.
Do I need to prepare for my ultrasound?
Preparation depends on the stage of pregnancy:
- Early pregnancy ultrasounds may require a full bladder
- Later ultrasounds typically do not require special preparation
Your office will provide specific instructions.
Can I find out the baby’s gender during ultrasound?
In many cases, gender can be determined during the anatomy scan around 18–22 weeks, if you choose to know.
What if something abnormal is found?
If the ultrasound shows an area of concern, your provider may recommend:
- Additional imaging
- Referral to a maternal-fetal medicine specialist
- Further testing
Many findings turn out to be minor or require monitoring only.
Are 3D and 4D ultrasounds part of routine care?
3D and 4D ultrasounds may be available, but standard 2D ultrasound is typically used for medical evaluation. Your provider will discuss options if available.
Will insurance cover obstetric ultrasound?
Most medically necessary ultrasounds are covered by insurance. Coverage varies by plan.
Does ultrasound replace other prenatal tests?
No. Ultrasound is one part of prenatal care and may be combined with blood tests or genetic screening for comprehensive evaluation.
When should I call my provider?
Contact your provider if you experience:
- Vaginal bleeding
- Severe abdominal pain
- Decreased fetal movement (later in pregnancy)
- Sudden swelling or concerning symptoms
Supporting a Healthy Pregnancy
Obstetric ultrasound is an important tool in monitoring your baby’s development and providing reassurance throughout pregnancy. If you have questions about your upcoming ultrasound, our team is here to help.