2 doctors weighed in:

Hi there, We had our first ultrasound today at 9 weeks 2 days. The baby is measuring (crown to rump) an accurate 9w2d, but the gestational sac is 8 ?

2 doctors weighed in
Dr. Saptarshi Bandyopadhyay
Internal Medicine - Hospital-based practice
1 doctor agrees

In brief: Many results of US

There r many measurements that r taken during the trimester ultrasounds (US) to help gauge how the fetus is progressing.
None of the measurements are 100% accurate. Doctors use the battery to get an idea of how well the fetus is growing. No 1 measurement is supreme; u have to take them all in context. If ur OB is not worried abt the US, u shd not worry. Congrats, & thanks for asking HealthTap!

In brief: Many results of US

There r many measurements that r taken during the trimester ultrasounds (US) to help gauge how the fetus is progressing.
None of the measurements are 100% accurate. Doctors use the battery to get an idea of how well the fetus is growing. No 1 measurement is supreme; u have to take them all in context. If ur OB is not worried abt the US, u shd not worry. Congrats, & thanks for asking HealthTap!
Dr. Saptarshi Bandyopadhyay
Dr. Saptarshi Bandyopadhyay
Thank
Get help from a real doctor now
Dr. Adam Levy
Board Certified, Obstetrics & Gynecology
35 years in practice
1M people helped
Continue
111,000 doctors available