Dating ultrasound measurements

The computer in the ultrasound (ignorantly) lumps your bigger baby into the dates of babies that big in the “normal” population.

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The bright white circle center-right is the head, which faces to the left.

The software has certain measurement scales based on data from large populations, and your baby’s measurements are put into this scale.

In other words, by comparing your baby’s measurements to the data from this large collection of measurements, the ultrasound can then tell how far along your baby is.

The procedure is a standard part of prenatal care in many countries, as it can provide a variety of information about the health of the mother, the timing and progress of the pregnancy, and the health and development of the embryo or fetus.

The International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) recommends that pregnant women have routine obstetric ultrasounds between 18 weeks and 22 weeks gestational age in order to confirm pregnancy timing, to measure the fetus so that growth abnormalities can be recognized quickly later in pregnancy, and to assess for congenital malformations and multiple gestations (i.e. Additionally, the ISUOG recommends that pregnant women have obstetric ultrasounds between 11 weeks and 13 weeks 6 days gestational age in countries with resources to perform them.So in this arithmetic test, the baby sets the curve.Use a Facebook account to add a comment, subject to Facebook's Terms of Service and Privacy Policy.One variant, a transvaginal sonography, is done with a probe placed in the woman's vagina.Transvaginal scans usually provide clearer pictures during early pregnancy and in obese women.The femur (thigh bone) length seems to hold on to it’s accuracy longer than the other parameters, but after 36 weeks it isn’t foolproof.

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