The NT scan, or Nuchal Translucency scan, is a routine but crucial part of prenatal screening. It plays an important role in assessing the risk of chromosomal abnormalities in a growing baby during early pregnancy. If you’re expecting and want to ensure the health of your baby, understanding the NT scan can give you peace of mind and help you make informed decisions.
What Is an NT Scan?
The NT scan is a specialized ultrasound done between 11 to 14 weeks of pregnancy. It measures the clear (translucent) space in the tissue at the back of your baby’s neck. Babies with certain genetic conditions tend to have more fluid at the back of their neck during the first trimester, which makes this space appear larger.
Why Is It Done?
The NT scan helps detect the risk of:
- Down syndrome (Trisomy 21)
- Edwards syndrome (Trisomy 18)
- Patau syndrome (Trisomy 13)
The results are usually combined with a blood test and your age to provide a risk assessment.
When Should You Do the NT Scan?
The ideal time for an NT scan is between 11 weeks and 13 weeks 6 days of pregnancy. After this period, the accuracy of the scan drops, and the scan cannot be performed reliably.
What Happens During the Scan?
- You will lie down comfortably while the ultrasound is performed over your abdomen.
- A trained fetal medicine expert will measure the NT thickness.
- The scan is non-invasive, painless, and usually takes around 20–30 minutes.
- You may be asked to have a full bladder to improve image clarity.
Benefits of the NT Scan
- Early Detection: Identifies potential chromosomal conditions at an early stage.
- Safe & Non-Invasive: No risk to the mother or baby.
- Helps Plan Further Testing: If needed, you can opt for further tests like NIPT or CVS.
Is It Mandatory?
The NT scan is optional, but highly recommended, especially if:
- You are above 35 years of age
- You have a family history of genetic disorders
- You want reassurance about your baby’s development
Where to Get an NT Scan in Chennai?
Choosing a center with experienced fetal medicine consultants ensures accurate reporting and counseling. At Vivid Scans, Chennai, Dr. Archana (Fetal Medicine Specialist with 10+ years of experience) performs all NT scans with care and precision.
Final Thoughts
An NT scan is one of the first opportunities to assess your baby’s health and development. It not only helps rule out major risks but also gives you a chance to see your baby growing. If you’re approaching the end of your first trimester, don’t miss this important step in your pregnancy journey.
