Get Virtual Care
For Businesses
About Us
A member asked:
If ultrasounds have margin of error, how do u know when you're within the range of when the nt scan should be done?does fetus have to be certain size?
A doctor has provided 1 answer
Best estimate : The margin of error for ultrasound dating is the smallest in the first trimester, which is when the nuchal translucency scans are performed. Yes the fetus does have to be a certain size and between certain dates in order for the information to be accurate.
Answered 1/6/2015
4.6k views
Thank
Related Questions
A member asked:
28 week ultrasound showed asymmetric brain ventricles on fetus.. Within normal range (7-8mm) Everything else ok. Should I be worried?
A doctor has provided 1 answer
A member asked:
How accurate is ultrasound done at 20 weeks for gender determination of fetus. Is obstretics ultrasound with same accuracy. Same question for 22 wks?
4 doctors weighed in across 2 answers
A member asked:
Just had an ultrasound today am supposed to be 9 weeks...last mp was 8/6/15 showing fetus +- 6 weeks in size no heartbeat and hcg levels 35000...help!
A doctor has provided 1 answer
A member asked:
What's doppler ultrasound exams are done on the fetus or placenta?
A doctor has provided 1 answer
A member asked:
Went to the doctor today and i was told that im 7 weeks and 4 days.... Got an ultrasound done and there only was a sac no fetus. What does that mean?
3 doctors weighed in across 2 answers
People also searched for:
What is the error of margin for an ultrasound dating at 11 week 4 day, measuring the fetus crl at 4.8 cm?
Does 1st trimester ultrasound have margin of error up to 7 days because of the equipment/skill of tech or because fetus can grow at dif rates?
Doctor said that a 12 week fetus couldn't be 2 weeks off and confused with an 8 or 10 week fetus.Is there not a range of error with ultrasounds?
GA is 8 weeks 4days when ultrasound was done. Ultrasound shows GA as 7 weeks 6 days. Fetus is 1.47cm. FHR 158bpm. Is this normal range? I'm 40.
Does the fetus have to be a certain size (mm/cm) in order for the nuchal translucency (ips) ultrasound to be performed?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HIPAASecure
SOC 2 Type 2Certified
JCAHOAccredited
Download HealthTap
Video visit and message your doctor
