Doctor insights on:
Transvaginal Ultrasound First Trimester
The sonogram is a test that looks at body organs with no radiation. It uses sound waves and can give us a 2 dimensional view of organs such as the kidney, liver, heart, and lungs. It can define spaces that are either solid or full of fluid. I can also guide large needles into an organ or near the spine, and can help define the area being cut open. Its a ...Read more
What is the margin of error for an abdominal ultrasound in the first trimester. Around 11 weeks. Would vaginal be more accurate?
My doctor switched my ultrasound from a pre-conception ultrasound to a first trimester ultrasound. What's the difference?
How accurate are first trimester ultrasounds at 8w1d & 9w5d done 2 weeks apart? And how much can it be off by?
Fetal Ultrasound: A first trimester ultrasound is pretty accurate in terms of predicting expected date of delivery. Having two within 2 weeks with these fetal ages tends to indicate the accuracy of the measurements, and indicates that the fetus is growing. If the 2 ultrasounds were 14 days apart, the difference in the estimated age was 11 days, that gives a very accurate prediction of a due date, within 3 days. ...Read moreSee 2 more doctor answers
8%: The margin of error is calculated by 8% of the number of days pregnant. At 8w1d that is .08x 57 days or 4.56 days and at 9w5d it is 0.08x68days or 5.44 days. ...Read more
Ultrasounds in first trimester 6weeks 5 days oct.31 9 weeks 6 days nov 20 then meausring 13weeks 3days dec 11 a week ahead. could i be further then 36?
Ob ultrasound: OB ultrasounds are most accurate for dating purposes early in the pregnancy 6-8 weeks. As the pregnancy progresses we are not able to get as good a view and the variations in fetus growth make later ultrasounds difficult interms of dating a pregnancy (how far along you are). Later ultrasounds are more used for detecting problems ...Read more
Early Ultrasound: Nope. These are thought to be the most accurate. ...Read more
Possible: Usually not in the first weeks-4 to 6, but as the time of gestation progresses the estimation of gestational age can change. ...Read more
An ultrasound is an imaging study in which a probe emits and receives sound waves which rebound off of internal organs in order to visualize them. For a transvaginal ultrasound a specially designed probe is lubricated and placed into the vagina in order to better ...Read more
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