First Trimester / Dating Ultrasound
New England Journal of Medicine. The accuracy of an ultrasound test can vary based on factors such as the stage of the pregnancy, the quality of the machine, the skill of the practitioner, and the position of the baby in your womb. Kettering: National Down's Syndrome Screening Programme. However, in the early pregnancy, the developing embryo is very small at 6 weeks gestation, the baby is only 5- 9mm long and a transvaginal ultrasound may be required to get a better image of the baby.
Of all of these uses, dating the pregnancy is the most common reason to use ultrasound, particularly when the expectant mother cannot remember the date of her last period as in breast-feeding or irregular cycles. You may need a second to check the first scan's findings. It should not be used as a substitute for professional medical advice, diagnosis or treatment.
First Trimester / Dating Ultrasound - She has a Bachelor of Science in zoology, a Bachelor of Science in psychology, a Master of Science in chemistry and a doctoral degree in bioorganic chemistry. Antenatal Road for Tender's syndrome, plum standards to balance women's health.