How are dating scans worked out
When does the dating scan take place?
Medical resources Medical Dictionary. 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.
If the heartbeat cannot be detected then more tests have to be done, but this does not necessarily indicate a problem: 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. An experienced sonographer can often find any major irregularities like limb deformities.
Some of these and other measurements are most useful after 13 weeks, which is how are dating scans worked out for a late dating scan.
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. 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.
What is the purpose of the dating scan?
I agree I want to learn more. 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.
These help to ensure the pregnancy goes smoothly, and to identify any problems ahead of time.