As its name suggests, the main purpose of a dating scan is to check how advanced the pregnancy is and therefore when the baby is due. Measuring the baby can be more accurate than dating by the last menstrual period. It is also an opportunity to check the baby is alive and developing as expected, and check for twins.
It's your first pregnancy ultrasound where you see your baby for the first time, but what's it all about? Will the dating scan happen at exactly 12 weeks? The scan will be carried out by a sonographer, who is trained in performing scans and knowing what to look out for.
For many women, especially after 8 weeks gestation, sufficient information about the baby may be obtained with transabdominal ultrasound only. However, in the early pregnancy, the developing embryo is very small at 6 weeks gestation, the baby is only mm long and a transvaginal ultrasound may be required to get a better image of the baby. Transvaginal ultrasound is safe and commonly performed during all stages of pregnancy, including the first trimester.
A pregnancy can be seen on a scan from 6 weeksbut usually your first scan will be offered at 12 weeks. However, there are reasons why you might be referred for an early pregnancy scan, sometimes called a dating scan or viability scan. Why you might have an early pregnancy scan You may be offered an early pregnancy scan if you are experiencing bleeding and spotting in the early stages of pregnancy. Although a common early pregnancy symptom, it will sometimes be advised to have an early scan to rule out early miscarriage or ectopic pregnancy.
It's used to see how far along in your pregnancy you are and check your baby's development. Nuchal Translucency Scan - This is also offered to pregnant mums at the same time as the Dating Scan. This in conjunction with a blood test assesses the risk of Down Syndrome in babies.
A dating scan is an ultrasound scan to determine how many weeks pregnant you are and your due date. Read on for more information about what a dating scan offers. A dating scan might be recommended to confirm your due date if you are unsure of your last menstrual period or your date of conception.
An ultrasound scan sonogram uses sound waves that bounce off solid objects to create two-dimensional black and white images on a screen. It's completely safe for you and your baby. It also isn't completely reliable.
We at MUMS understand that the first few months of pregnancy can be quite an anxious time for many women with various concerns as to whether the pregnancy is developing normally or that it may result in a miscarriage or even an ectopic pregnancy. An Early Pregnancy Scan sometimes also called a Viability Scan or Dating Scan provides reassurance in this very early stage of your pregnancy. A pregnancy can be seen from as early as 6 weeks from the first day of your last period LMP and not the date of conception. If you have had any bleeding or pain or any other symptoms then this scan will accurately confirm viability.
A dating scan is an ultrasound examination which is performed in order to establish the gestational age of the pregnancy. Most dating scans are done with a trans-abdominal transducer and a fullish bladder. If the pregnancy is very early the gestation sac and fetus will not be big enough to see, so the transvaginal approach will give better pictures.