What is a dating ultrasound
The long term effects of repeated ultrasound exposures on the fetus are not fully known.It is recommended that ultrasound only be used if medically indicated. The heartbeat may not be detected for reasons that include: tipped uterus, larger abdomen, or inaccurate dating with last menstrual period.Transvaginal scans may be used early in pregnancy to diagnose potential ectopic or molar pregnancies.There is not a recommended number of ultrasounds that should be performed during routine prenatal care.However, variations in each woman’s cycle and each pregnancy may hinder the accuracy of the gestational age calculation.
Ultrasounds are diagnostic procedures that detect or aid in the detection of abnormalities and conditions related to pregnancy.
Ultrasound dating of conception is not reliable for determining paternity because the ultrasound can be off by at least 5-7 days in early pregnancy.
You may have an ultrasound between 18 to 20 weeks to evaluate dates, a multiples pregnancy, placenta location or complications.
There are basically seven different ultrasound exams, but the principle process is the same.
The different types of procedures include: Transvaginal Scans – Specially designed probe transducers are used inside the vagina to generate sonogram images.