Nuchal scan for Down's Syndrome

Nuchal scan for Down's Syndrome

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Caption: Nuchal translucency test. Coloured ultrasound scan of the head and neck of a 13 week foetus taken during a nuchal fold translucency test for Down's syndrome. The nuchal fold (pink) is a collection of fluid between two layers of skin at the back of the foetus' neck. It is present in all foetuses, but is more pronounced and opaque in those at a higher risk of Down's syndrome. This foetus has a narrow and clear nuchal fold, indicating that it has a low risk. This diagnosis is further confirmed by the normal profile of the face and presence of a nasal bone. An ultrasound scan is a non-invasive procedure that poses no risk to the foetus. If it is found the foetus is at a higher risk of Down's syndrome further invasive tests can be taken to confirm the diagnosis.

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Keywords: 13 weeks, antenatal, assessment, chromosomal, coloured, diagnosis, diagnostic, down's syndrome, false-colour, false-coloured, fetal, fetus, fluid, foetal, foetus, head, healthcare, healthy, human, human body, in utero, measuring, medical, medicine, nasal bone, neck, non-invasive, normal, nuchal fold, nuchal translucency test, obstetrics, people, person, pregnancy care, prenatal, scanner, sonography, test, trisomy 21, ultrasonography, ultrasound scan, width

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