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Doctor insights on: 9 Week Ultrasound

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Dr. Michael Gabor
2,305 doctors shared insights

Sonogram (Definition)

An ultraound, also known as a sonogram, is a painless and relatively inexpensive imaging test that utilizes sound waves instead of ionizing radiation. There are no side effects. Ultrasound can give us two-dimensional, and in some applications three-dimensional, images of structures and organs in virtually any part of the body. In addition to diagnostic uses, such as evaluating abnormalities in the abdomen, pelvis, and breast, ultrasounds are commonly used to guide needle and catheter placement in a variety of surgical ...Read more


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How do 9 week transvaginal ultrasounds date a pregnancy?

How do 9 week transvaginal ultrasounds date a pregnancy?

By measuring the: Size of the fetus and the size equates with weeks gestation. ...Read more

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Can a 9 week fetus look 7 weeks?

Can a 9 week fetus look 7 weeks?

Maybe but not likely: You have to understand that the usual way to date is weeks from the menstrual period, which is presumed( but not always )2 weeks from conception. But, if a good ultrasound is done and the first third of pregnancy, it should be accurate to within 5 days, not 2 weeks off! if within 5 days, they way still go by the menstrual period or probable date of conception... Talk to your ob! hope this helps. ...Read more

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How off can 9 week transvaginal ultrasounds be?

No more than a week: In general, first trimester ultrasounds are accurate within +/- 7 days. Remember, if you are measuring "9 weeks" size, that means you conceived about 7 weeks ago. ...Read more

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Is conception more accurate based off LMP or 9 week ultrasound?

Is conception more accurate based off LMP or 9 week ultrasound?

Both is best: The most accurate dating is where the 1st trimester ultrasound is within a week of the lmp dating; that confirms the lmp dating. If the 9 week ultrasound gives dates greater than 1 week from what's predicted by the lmp then the lmp is not accurate and the ultrasound dating should be used. ...Read more

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Is a 9 week or 20 week ultrasound more accurate?

Is a 9 week or 20 week ultrasound more accurate?

20 week: 20 week study more accurate for fetal anatomy and structure. Both studies equally accurate for viability. ...Read more

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Would a transabdominal-pelvic ultrasound detect an ectopic pregnancy at 9 weeks?

Would a transabdominal-pelvic ultrasound detect an ectopic pregnancy at 9 weeks?

Maybe: The accuracy of a transabdominal pelvic ultrasound will depend on several factors: the level of the blood betaHCG tests, (not the LMP or estimated weeks of pregnancy) the skills and experience of the sonographer, (Certified Registered Technician) the quality and resolution power of the ultrasound machine, its number of MegaHertz, the location of the ectopic pregnancy (tubal,ovarian, cervical..) ...Read more

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Lmp: 6 weeks 5 days. Ultrasound shows 5 weeks 5 days. Bleeding x 4 days. Ultrasound shows heartbeat @ 87, (+) fetal pole. Miscarriage?

Lmp: 6 weeks 5 days. Ultrasound shows 5 weeks 5 days. Bleeding x 4 days. Ultrasound shows heartbeat @ 87, (+) fetal pole. Miscarriage?

Threatened AB: Any bleeding or cramping in your first trimester can be from a threatened miscarriage (or abortion, ab). The bleeding is always a worrisome sign and a fetal heart rate < 100 BPM is also worrisome. Follow your doc's instructions & remember that if you do miscarry, it is rarely from something you did and most are inevitable. Take care & best of luck. ...Read more

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They did a ob sono transvaginal didn't see my babies heart beat i'm 9 weeks?

They did a ob sono transvaginal didn't see my babies heart beat i'm 9 weeks?

Miscarriage: I am not sure what you want from us here. What did your OB say? It sounds like you have had a miscarriage. Correct? ...Read more

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Is gestational age accurate from ultrasound at 9 weeks?

Is gestational age accurate from ultrasound at 9 weeks?

Yes it is: By that point, ultrasound is the primary tool to estimate gestational age. More accurate than last menstrual period. ...Read more

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Ultrasound shows one IVF twin 4 days behind 9 week scan. Both had strong heart beats. When to worry?

Ultrasound shows one IVF twin 4 days behind 9 week scan. Both had strong heart beats. When to worry?

Not to worry.: I can tell this is a highly desired and anticipated pregnancy and offer you my congratulation on the success thus far. As you know, things can still go wrong as this is a very high-risk pregnancy, so see a maternal-fetal medicine specialist as soon as possible and get information on twin-to-twin-transfusion syndrome and genetic counseling. Non-invasive prenatal genetic testing is now available. ...Read more

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How far can an 8-9 week ultrasound be off ?

How far can an 8-9 week ultrasound be off ?

Depends on the skill: Of the ultrasoundographer. Easily 1-2 weeks that's limits of the test itself. Perhaps as much as three weeks at the very most. ...Read more

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What do you look for in a 9 week ultrasound to determine whether baby is developing properly?

Size: At this point it is really only based on size and whether the heart is beating. Can't do any significant anatomy eval. ...Read more