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. It will not harm you or your baby. Transabdominal ultrasound involves scanning through your lower abdomen.
Time of first ultrasound ? - Canadian Parents | Forums | What to Expect
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. It is usually offered to pregnant women from 10 weeks to 13 weeks gestation, but can be carried out any time from 6 weeks. If you have had bleeding during your pregnancy or you have had previous miscarriages , your doctor or midwife may recommend an early dating scan from 6 to 10 weeks gestation. If you choose to have a dating scan, it will most probably be your first scan.
That first glimse at your baby-to-be is an amazng experience! Here's what you can expect. You'll be hopping and skipping to this doctor's appointment -- most women agree that an ultrasound is the one prenatal test they enjoy. An ultrasound is a painless diagnostic test that relies on sound waves, and most women will have at least one during pregnancy. Your first ultrasound will typically be done between 18 and 20 weeks, but you may have one before 12 weeks to confirm your due date.
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. Dating scans are usually recommended if there is doubt about the validity of the last menstrual period.