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. 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.
Early Pregnancy Scan (6 -14 weeks)
Ultrasound Examination | Establishing the Gestational Age of the Pregnancy | Ultrasound Care
Menu Close menu. Back to Your pregnancy and baby guide. Ultrasound scans use sound waves to build a picture of the baby in the womb. The scans are painless, have no known side effects on mothers or babies, and can be carried out at any stage of pregnancy. Talk to your midwife, GP or obstetrician about any concerns you have.
Women's Health Care Physicians
Reason I ask is because I had intercourse with someone on 9th December he didn't ejaculate, I know this doesn't matter. I understand the only way is a DNA so please don't suggest that im just after friendly advise. I think the internal scan gives a more accurate date has they get a closer look but i. The conception. My best advise is to look online at a pregnancy due date calculator has they tell you when your possible conception.
At around seven weeks of pregnancy, the well-implanted embryo in the uterus begins to diversify and grow its feet and hands. It is a very exciting week for the mother as she gets to see her baby for the first time through an ultrasound scan. Women who have an irregular menstrual cycle or do not remember their last menstrual period date find it challenging to calculate their due dates. Also, women who have conceived while taking oral contraceptives or are breastfeeding do not know the date of conception. In such situations, a dating scan to estimate the approximate gestational age of the baby can be helpful in calculating the estimated delivery date.