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2. Nuchal scan - Wikipedia

   en.wikipedia.org/wiki/Nuchal_scan

   As nuchal translucency size increases, the chances of a chromosomal abnormality and mortality increase; 65% of the largest translucencies (>6.5mm) are due to chromosomal abnormality, while fatality is 19% at this size. [2] A nuchal scan may also help confirm both the accuracy of the pregnancy dates and the fetal viability.

3. Obstetric ultrasonography - Wikipedia

   en.wikipedia.org/wiki/Obstetric_ultrasonography

   Perhaps the most common such test uses a measurement of the nuchal translucency thickness ("NT-test", or "Nuchal Scan"). Although 91% of fetuses affected by Down syndrome exhibit this defect, 5% of fetuses flagged by the test do not have Down syndrome. Ultrasound may also detect fetal organ anomaly.

4. Prenatal testing - Wikipedia

   en.wikipedia.org/wiki/Prenatal_testing

   At early presentation of pregnancy at around 6 weeks, early dating ultrasound scan may be offered to help confirm the gestational age of the embryo and check for a single or twin pregnancy, but such a scan is unable to detect common abnormalities. Details of prenatal screening and testing options may be provided.

5. Medical imaging in pregnancy - Wikipedia

   en.wikipedia.org/wiki/Medical_imaging_in_pregnancy

   Options for medical imaging in pregnancy include the following: Magnetic resonance imaging (MRI) without MRI contrast agents as well as obstetric ultrasonography are not associated with any risk for the mother or the fetus and are the imaging techniques of choice for pregnant women. [1]

6. A week-by-week guide to common pregnancy symptoms - AOL

   www.aol.com/news/week-week-guide-common...

   Although you should contact your provider as soon as you get a positive pregnancy test, many women have their first prenatal visit during week eight. ... If he or she is in the right position, you ...

7. Pregnancy test - Wikipedia

   en.wikipedia.org/wiki/Pregnancy_test

   The control line of this pregnancy test is blank, making the test invalid. The control line on the left of this pregnancy test is visible, suggesting that the test result is valid. A pale purple line has also appeared on the right hand side (the test line) which clearly signifies that the subject is pregnant.