NT Scan
Early screening for chromosomal abnormalities at 11-14 weeks of pregnancy
Understanding NT Scan
Watch this informative video to learn more about the NT scan process and what to expect during your appointment.
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What is an NT Scan?
A Nuchal Translucency (NT) scan is a specialized ultrasound examination performed between 11-14 weeks of pregnancy. It measures the fluid collection at the back of the baby's neck to assess the risk of chromosomal abnormalities, particularly Down syndrome and other genetic conditions.
What We Check
- Nuchal translucency measurement
- Nasal bone presence
- Fetal heart rate
- Basic anatomy assessment
- Crown-rump length measurement
Important Information
Best Time for NT Scan
The optimal time for an NT scan is between 11-14 weeks of pregnancy. During this period, the nuchal translucency can be accurately measured. The measurement is most reliable when the baby's crown-rump length is between 45-84mm. This timing is crucial for accurate risk assessment.
What the Scan Detects
- Increased risk of Down syndrome
- Increased risk of other chromosomal abnormalities
- Heart defects
- Skeletal dysplasia
- Fetal growth and development
- Accurate pregnancy dating
Limitations
While the NT scan is a valuable screening tool, it has some limitations:
- Not a diagnostic test - only indicates risk
- Accuracy depends on precise measurement timing
- Baby's position may affect measurement quality
- Maternal factors can influence results
- False positives and negatives are possible
The Scan Process
Preparation
Come with a moderately full bladder. Wear comfortable, loose-fitting clothing. Avoid applying oil or lotion to your belly.
The Scan
A specialized ultrasound examination lasting about 20-30 minutes, performed by our expert sonographers. A water-based gel is applied to your abdomen for smooth probe movement.
Results
Immediate feedback from our specialists, with detailed report and images provided. If increased risk is detected, further diagnostic tests like CVS or amniocentesis may be recommended.
What to Expect
During the Scan
- Comfortable, private scanning room
- High-definition ultrasound equipment
- Real-time viewing of your baby
- Detailed explanation throughout
- Partner or family member can accompany you
After the Scan
- Comprehensive written report
- Printed ultrasound images
- Digital copies of images
- Follow-up consultation if needed
- Genetic counseling if increased risk is detected
Frequently Asked Questions
What is a normal NT measurement?
A normal NT measurement is typically less than 3.5mm. However, the interpretation depends on the baby's crown-rump length and is combined with other factors like maternal age and blood test results to calculate the overall risk.
How accurate is the NT scan?
When combined with first-trimester blood tests (combined screening), the NT scan can detect about 85-90% of Down syndrome cases. However, it is a screening test, not a diagnostic test, and false positives can occur.
What if my NT scan shows increased risk?
If your NT scan shows increased risk, your healthcare provider will discuss further diagnostic options such as Chorionic Villus Sampling (CVS) or amniocentesis. These tests can provide a definitive diagnosis but carry a small risk of miscarriage.
Can I have an NT scan if I'm having twins?
Yes, NT scans can be performed for twin pregnancies. Each baby will be measured separately, and individual risk assessments will be provided for each twin.
Is the NT scan covered by insurance?
Coverage varies by insurance provider. Many insurance plans cover NT scans as part of routine prenatal care, but it's best to check with your provider directly to confirm coverage details.
Schedule Your NT Scan
Book your appointment with our experienced specialists for a comprehensive NT scan.