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1962, after about two years of work, joseph holmes, william wright, and ralph meyerdirk developed the first compound contact b-mode scanner.
fda discourages its use for non-medical purposes such as fetal keepsake videos and photos, even though it is the same technology used in hospitals.
This test gives us an indication of whether we should worry about your baby based on these results.
For example, it tells us whether your baby has a low risk of having trisomy 13, 18 or 21, or whether your baby has a high risk of having trisomy 13, 18 or 21.dating scan will also show if you're expecting twins, triplets or more."first-trimester screening for trisomy 21 combining biochemistry and ultrasound at individually optimal gestational ages.In addition, the nuchal translucency, which is a small echo free space at the back of the fetal neck, is measured.All fetuses have a nuchal translucency, but the larger the nuchal translucency measurement the higher the chance that there is a problem with the baby (eg.