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Is an ultrasound more accurate in dating of pregnancy especially if you do not know your LMP?
Wiki User
∙ 18y ago
Yes, During an ultra sound they measure the length of the baby, the limbs if visible, head circumference etc.. then calculate an expected delivery date. An ultrasound is accurate to within a couple of days if done at 8 weeks. At 20 weeks it is accurate to within a week. After this babies grow at such diffeerent rates that it becomes increasingly less accurate.
Wiki User
∙ 18y ago
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How is relative dating more accurate?
Relative dating is not more accurate than absolute dating. Relative dating will, if done properly, give you an order sequence in time but it will not return any information about when something happened unless there is other information that can be used to establish a time frame.
The use of scientific methods such as carbon dating to determine the age of an artifact?
Which of these dating methods is capable of giving the most accurate age of an artifact?
What is a weakness of relative dating?
Does not always reflect the true sequence of events in time
Radioisotope dating can give accurate information about the age of a fossil what is an important aspect to this technique?
Half-life
What is the margin of error for carbon 14 dating and up to what date BC is it accurate?
12% 10,000 years
You were 16 weeks pregnant your ultrasound said that the baby size was 18 weeks which one should you do by?
The ultrasound dating has excellent and precise estimation of gestation especially if done in the first trimester (first 12 weeks). After 12 weeks, its accuracy goes down. However, compared to dating according to menstrual cycle, the ultrasound would be more accurate.
When they do a sonogram can they know exactly when you got pregnant?
If the ultrasound is done in the first weeks of pregnancy it is possible to date the embryo within a few days, an ultra sound done later is not as accurate for dating purposes.
How accurate are the ultrasounds for dating a pregnancy?
My wife told her doctor she didn't know when her last mp was, so he sent her for an ultrasound! She lied, we just wanted 2 get an early ultrasound, and it was exact 2 the day and that was at 5 weeks 4 days! Our 1st baby measured within 5 days thru the entire pregnancy, and that was as early as 8 weeks and as late as 26!
Could i be father along in my pregnancy than what im told consdering i had irregular period when my periods normally last 5 days but lasted a week with spotting?
Yes. You should tell your Dr so that they can preform an ultrasound to provide you with more accurate dating.
What does BPD mean on ultrasound?
Biparietal diameter (BPD) is the diameter across the developing baby's skull, from one parietal bone to the other. The measurement is useful in dating the pregnancy and estimating fetal weight after about 13 weeks of pregnancy.
How off can an ultrasound be that estimated your last menstrual period the same at eight weeks and twelve weeks?
I think this is what you mean. For example. On 28th December the ultrasound said you were 8 weeks pregnant, then on 25th January it said you were 12 weeks pregnant. This would be accurate to within 4-5 days each time.
For what purpose do geologists use relative dating?
It remains a useful technique especially in materials lacking radioactive isotopes. Relative dating by biostratigraphy is the preferred method inpaleontology, and is in some respects more accurate
Is radioactive dating a scientific theory?
No, it is a method of dating materials that is very accurate.
Is stratigraphic dating accurate for dating fossils?
Carbon dating and radioactive dating are more effective, assuming those arn't the same thing. =]
What are the release dates for Pregnant in Heels - 2011 The Pregnancy Dating Dilemma 2-8?
Pregnant in Heels - 2011 The Pregnancy Dating Dilemma 2-8 was released on:USA: 3 July 2012Pregnant in Heels - 2011 The Pregnancy Dating Dilemma - 2.8 was released on:USA: 3 July 2012
What is the most accurate way to date a fossil?
Carbon dating
How is relative dating more accurate?
Relative dating is not more accurate than absolute dating. Relative dating will, if done properly, give you an order sequence in time but it will not return any information about when something happened unless there is other information that can be used to establish a time frame.
