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Development of nuchal translucency [ ] The actual anatomic structure whose fluid is seen as translucency is likely the normal at the back of the neck, which either may become edematous or in some cases filled with fluid by dilated lymphatic sacs due to altered normal embryological connections.

Normal or abnormal results You may also be told that your results are "normal" or "abnormal" for a particular condition, depending on whether the ratio is below or above a specified cutoff.

Cases older than the last audit will not be accepted.

1 In the second trimester, CH, fetal hydrops, and regional edema are more common see Classic Signs box.

In some cases, it is possible to determine fetal gender through the first-trimester scan.

How Is The NT Scan Done And How Much Time Does The Procedure Take? All of these conditions involve having an extra copy of chromosomes on a specific set of chromosomes chromosome 21, 18, or 13, respectively.

A nuchal translucency screening, or NT screening, is a specialized performed at the end of the first trimester of pregnancy.

The gestational period must be 11 to 13 weeks and six days.

What is Nuchal Translucency NT Ultrasound? A normal result might eliminate the need for a more invasive prenatal diagnostic test.

In general, the thicker the nuchal translucency at a given gestational age, the higher the chance of a chromosomal problem.

A more detailed scan, which will be able to see anatomy, can be done around 20 weeks.