Accuracy of ultrasound dating
The cookies contain no personally identifiable information and have no effect once you leave the Medscape site.Ultrasound may be a key tool for doctors to determine the health of a fetus, but for many expectant parents, it's key for another important (and exciting) reason: It can clue you in on whether you're expecting a boy or girl!"Some fetuses are bashful and keep their legs together and impair determination of the gender," says Dr. "If they are not clearly visualized, mistakes can be made when sonographers guess the gender based on a suboptimal examination." If your sonographer is having a tough time seeing between your baby's legs, take any answer you get from her with a grain of salt.If you're plus-size, that additional body mass can prohibit a clear image of your baby.On the plus side I have a wicked collection of scan photos I cried at everyone and a great story to tell Thomas where we were the first time that we saw him !!! Dating scans are pretty accurate - so you will learn from that how far you are.x Best of luck and take tissues lol I had scans at EPAC at 6 and 8 weeks with this pregnancy, and when I asked the doctor afterwards when I'd be due she gave me a 'rough date' and told me they'd almost definitely change it at 12weeks because at 6 and 8 weeks it's too early and small to measure probably which is why they do it later. The scan at 12 weeks is to check over your babies development so far, and to confirm the number of babies in your tummy!
If your little one doesn't cooperate during your ultrasound, you may not get that boy or girl determination until he or she arrives.
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First trimester ultrasound is most accurate at estimating gestational age within 5-7 days (depends on the center). General rule: 2nd trimester scans for dating are /- 14 days and 3rd trimester is the least accurate ( /-21 days). Read more See 1 more doctor answer An ultraound, also known as a sonogram, is a painless and relatively inexpensive imaging test that utilizes sound waves instead of ionizing radiation. Ultrasound can give us two-dimensional, and in some applications three-dimensional, images of structures and organs in virtually any part of the body.
Always seek the direct advice of your own doctor in connection with any questions or issues you may have regarding your own health or the health of others.
An ultrasound can help you determine how far along you are in your pregnancy.
Still, the accuracy of your individual ultrasound will depend on a number of factors, including: Early ultrasounds may not be the best, most accurate gauge of whether you're expecting a boy or girl, according to some experts.