They are designed for health professionals to use. You may find the Ultrasound Scan article more useful, or one of our other health articles.
Since chromosomal abnormalities can result in impaired cardiovascular development, a nuchal translucency scan is used as a screening, rather than diagnostic, tool for conditions such as Down syndrome , and non-chromosomal abnormalities, including the genetic Di George syndrome and non-genetic Body-stalk anomaly. There are two distinct measurements — the nuchal translucency, which is measured earlier in pregnancy at the end of the first trimester, and for which there is a lower threshold for increased diameter, and the nuchal fold, which is measured towards the end of the second trimester.
It is usually part of an assessment called combined first trimester screening. Combined first trimester screening assesses the risk for your baby having certain chromosomal abnormalities trisomy 13, 18 and
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Obstetric ultrasonography is the use of medical ultrasonography in pregnancy , in which sound waves are used to create real-time visual images of the developing embryo or fetus in its mother's uterus womb. The procedure is a standard part of prenatal care in many countries, as it can provide a variety of information about the health of the mother, the timing and progress of the pregnancy, and the health and development of the embryo or fetus.