Dating scan accuracy

27-Mar-2016 23:42 by 9 Comments

Dating scan accuracy - Sex chat with unhapy married women

However this is not usually a problem, as the best time for a dating scan falls between 8 and 12 weeks, a month-long period.

The scan also gives a due date, which is sometimes a small range of dates due to a difference with your own dating attempt.An accurate due date is crucial so that, in the event of being overdue, your doctor knows whether you are drastically overdue or simply a few days late.As the scan is designed to assist the doctors’ understanding of the foetal age and when the baby is due, determining when this early scan takes place is occasionally a matter of estimation.Your doctor will ask you questions about when you had your last menstrual period, and estimate that ovulation occurred 14 days into the cycle, but some mothers may be unsure.This can be due to a number of factors, including whether the pregnancy was planned or not, and if the mother often has irregular periods.When you are offered a dating scan and the sonographer gains a picture of the baby’s development, they can use this to accurately calculate the baby’s age based on their size and formation.

This allows more precise timing for later scans, doctors’ appointments and check-ups on both mother and baby.As medical professionals have a precise idea of the baby’s development over nine months, knowing the foetal age makes it easier to judge if everything is fine with the baby.During the course of the pregnancy, every mother should have at least two scans.These help to ensure the pregnancy goes smoothly, and to identify any problems ahead of time.The dating scan is generally the first ultrasound that every mother-to-be will have.While many women will have a good idea of when they had their last menstrual period, another portion will be far less certain.