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You will always have a choice about whether transvaginal ultrasound is performed.If you have concerns about transvaginal ultrasound, please discuss this with your sonographer.The gel helps improve contact between the probe and your skin.Occasionally a transvaginal ultrasound is also needed.Occasionally, patients need to return on another day if the baby remains in an unhelpful position.A nuchal translucency ultrasound is performed with a transabdominal ultrasound.
For more information of prenatal diagnostic testing, please go to: The nuchal translucency is the fluid found at the back of your baby’s head and neck, just beneath the skin.
Nuchal translucency ultrasound alone can also provide this risk assessment, but it is not as accurate as combined first trimester screening.
Combined first trimester screening is a non-invasive way of assessing your risk, which means it does not involve putting needles into the placenta or amniotic sac, as happens with CVS and amniocentesis.
The probe is covered with a disposable protective sheath.
A small amount of ultrasound gel is placed on the end of this probe.