Pregnancy is an exciting journey filled with milestones, and ultrasound scans play a crucial role in monitoring your baby’s growth and well-being. One of the most common questions expecting parents ask is, “How many scans are required during pregnancy, and why are they important?”
The good news is that ultrasound scans are completely safe for both the mother and baby. They use sound waves, not radiation, to create images of the baby inside the womb. Your doctor recommends these scans at specific stages of pregnancy to ensure your baby’s healthy development and detect any concerns early.
If you’re planning a pregnancy scan in Pune, understanding the purpose of each scan can help you feel more confident throughout your pregnancy.
Are Ultrasound Scans Safe During Pregnancy?
Yes. Ultrasound is one of the safest diagnostic tools used during pregnancy.
Unlike X-rays, ultrasound does not use radiation. Instead, it uses high-frequency sound waves to create detailed images of your baby. Decades of research have confirmed that medically indicated ultrasound scans are safe when performed by qualified specialists.
Always follow your obstetrician’s recommendations and complete the scans at the advised time.
1. Dating Scan (6–8 Weeks)
The first ultrasound scan is usually performed between 6 and 8 weeks of pregnancy.
Purpose of the Dating Scan
This scan helps your doctor:
- Confirm that the pregnancy is inside the uterus
- Rule out an ectopic pregnancy
- Determine whether you are carrying one baby or twins
- Detect the baby’s heartbeat
- Estimate the expected due date accurately
For women with irregular menstrual cycles, this scan is especially important because it provides the most reliable pregnancy dating.
The scan may be performed through the abdomen or, if needed for better clarity, through a transvaginal approach.
2. NT Scan (12–13 Weeks)
Around 12 to 13 weeks, the next important ultrasound is the Nuchal Translucency (NT) Scan.
This early screening scan helps assess the baby’s risk for certain chromosomal or genetic abnormalities while also identifying major structural abnormalities that may already be visible during the first trimester.
The scan is often combined with maternal blood tests to provide a more accurate risk assessment.
3. Detailed Anomaly Scan (19–20 Weeks)
The anomaly scan is considered one of the most important scans during pregnancy.
A detailed fetal scan in Pune performed around 19 to 20 weeks carefully evaluates the baby’s organs and body structures from head to toe.
During the Anomaly Scan, the Specialist Examines:
- Brain
- Face
- Spine
- Heart
- Lungs
- Abdomen
- Kidneys
- Hands and feet
- Limbs
- Placenta
- Amniotic fluid
This scan looks for structural abnormalities and confirms whether the baby’s organs are developing normally.
Since the baby needs to be in the correct position for detailed assessment, the scan may take some time. Your doctor may even ask you to walk for a few minutes or eat something before continuing the examination. This is completely normal and should not be a cause for concern.
4. Fetal Echocardiography (23–24 Weeks)
Some pregnancies may require a fetal echocardiography, usually performed between 23 and 24 weeks.
This specialized ultrasound focuses on the baby’s heart to evaluate its structure and function in greater detail.
Your doctor may recommend this scan if:
- The anomaly scan shows a possible concern
- There is a family history of congenital heart disease
- The pregnancy is considered high-risk
- Additional monitoring is required
The scan can also reassess abnormalities that may become more evident as the pregnancy progresses.
5. Growth Scans During the Third Trimester
After the detailed scans are completed, the focus shifts to monitoring your baby’s growth and overall well-being.
Growth scans are generally advised every 4 to 6 weeks, depending on your doctor’s recommendations.
These scans assess:
- Baby’s weight and growth
- Amniotic fluid levels
- Placental health
- Baby’s position
- Overall fetal well-being
What Is a Color Doppler Scan?
Color Doppler is a specialized ultrasound study that evaluates blood flow.
It measures:
- Blood circulation from the mother to the uterus
- Blood flow through the placenta
- Circulation within the baby’s body
Proper blood circulation ensures that your baby receives enough oxygen and nutrients for healthy growth.
If blood flow appears reduced, your obstetrician can monitor the pregnancy more closely and plan appropriate treatment if necessary.
Growth Doppler Scan (36–38 Weeks)
Towards the end of pregnancy, a final Growth Doppler Scan is often performed between 36 and 38 weeks.
This scan helps assess:
- Baby’s final growth
- Placental function
- Blood flow
- Amniotic fluid
- Baby’s position for delivery
Based on these findings, your obstetrician can plan the safest mode and timing of delivery.
What About 3D and 4D Ultrasound Scans?
Many parents are excited about 3D and 4D ultrasound scans because they provide realistic images of the baby’s face.
However, these scans are optional and are mainly performed for bonding rather than medical diagnosis.
Whether clear images are obtained depends entirely on the baby’s position, the amount of amniotic fluid, and whether the baby’s hands are covering the face.
When Should You Get Pregnancy Ultrasound Scans?
Every pregnancy is unique, so the number and timing of scans may vary depending on your medical history and your doctor’s advice.
Routine pregnancy scans help:
- Confirm a healthy pregnancy
- Monitor fetal growth
- Detect structural abnormalities early
- Assess blood flow and placental function
- Support safe pregnancy management and delivery planning
Never skip a recommended ultrasound, as each scan provides valuable information about your baby’s development.
Expert Pregnancy Care at Momstory
At Momstory, our fetal medicine specialists use advanced ultrasound technology and internationally accepted protocols to monitor every stage of pregnancy with precision and care. From early pregnancy scans to detailed fetal assessments, we are committed to ensuring the best possible care for both mother and baby.
If your doctor has recommended a pregnancy ultrasound, consult our experienced specialists for accurate diagnosis and compassionate pregnancy care.
