Ultrasound in early pregnancy (before 12 weeks) – Dating Scan actually became pregnant about 8 weeks ago. measurement is not absolutely accurate. thats why most places like to do dating scans as close to 8 weeks as possible. Your LMP (last menstrual period) is probably less accurate than the scan date. “My due date got put back by 2 weeks at the 12 week scan. “I had an early scan at 8 weeks, which put me back a week,” adds AbnormalKitty. “Scans are an accurate way to give you a due date,” confirms Nigel from the Society and College. Sometimes the due dates estimated by an early ultrasound don't Pregnant woman holding the scan of her baby. Evidence suggests that, in the first 20 weeks of pregnancy, the first ultrasound may be the most accurate tool.
Dating scans are usually recommended if there is doubt about the validity of the last menstrual period. By 6 to 7 weeks gestation the fetus is clearly seen on trans-vaginal ultrasound and the heart beat can be seen at this early stage 90 to beats per minute under 6 to 7 weeks, then to beats per minute as the baby matures.
Ultrasounds performed during the first 12 weeks of pregnancy are generally within 3 - 5 days of accuracy. The most accurate time is between 8 and 11 weeks gestation.
i had my dating scan due to me not knowing my lmp at the time i had the scan at 8 weeks & 5 days, people say that the dating scan is accurate but what is it actually accurate on? if they date from conception do they still count 40 weeks? I have a due date of 3rd Feb and scan dates back to 29th April show more i had my dating scan due to me not knowing my lmp at the time i had the scan at 8 weeks & 5 days, people say that the dating scan is accurate but what is it actually accurate on? if they date from. conception do they still count 40 weeks? I have a due date of 3rd Feb