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Nuchal translucency (NT) scan

A Nuchal translucency (NT) scan is a ultrasound test of the pregnancy. It shows fluid at the back of the baby's neck at 11 to 14 weeks, used in screening for chromosomal conditions. No ionising radiation (sound waves).

General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.

SmartAnswer by DigiNepal SI

A Nuchal translucency (NT) scan is a ultrasound test of the pregnancy. It shows fluid at the back of the baby's neck at 11 to 14 weeks, used in screening for chromosomal conditions. No ionising radiation (sound waves). What it shows: Fluid at the back of the baby's neck at 11 to 14 weeks, used in screening for chromosomal conditions. generated by SI from cited sources · general information, not a diagnosis · consult a health professional

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

What it shows

Fluid at the back of the baby's neck at 11 to 14 weeks, used in screening for chromosomal conditions.

Why it is done

First-trimester screening.

Preparation

Usually no preparation; some scans need fasting or a full bladder, as the centre advises.

Radiation & safety

No ionising radiation (sound waves). Safe in pregnancy.

How long it takes

20 to 40 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

Sample type

Ultrasound

Consult a doctor to interpret results — a single test does not make a diagnosis.

Where to get this near you

Care near you

Uses your location once to list the nearest facilities. Nothing is stored.

Common questions

What does a nt scan show?
Fluid at the back of the baby's neck at 11 to 14 weeks, used in screening for chromosomal conditions.

Why is a nt scan done?
First-trimester screening.

How do I prepare for a nt scan?
Usually no preparation; some scans need fasting or a full bladder, as the centre advises.

Does a nt scan use radiation?
No ionising radiation (sound waves). Safe in pregnancy.

How long does a nt scan take?
20 to 40 minutes

Why is Nuchal translucency (NT) scan done?
First-trimester screening.

How do I prepare for Nuchal translucency (NT) scan?
Usually no preparation; some scans need fasting or a full bladder, as the centre advises.

Is Nuchal translucency (NT) scan safe in pregnancy?
No ionising radiation (sound waves). Safe in pregnancy.

SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

Emergency — call102