Gestational dating ultrasound

In normal state, each body tissue type, such as liver, spleen or kidney, has a unique echogenicity.

Harland, Injury Prevention Research Center and Department of Epidemiology, University of Iowa, 200 Newton Road, 2188 WL, Iowa City, IA 52242-5000 (e-mail: [email protected]).That way, regardless of where they trained or where they practice, any two doctors dating a pregnancy will predict the same due date or gestational age.However, the timing of the actual delivery is not so predictable.At around seven weeks of pregnancy, it’s reasonably common for women to have their first ultrasound.This can be for many reasons but the most common is to confirm pregnancy and to check that the embryo is viable and “everything’s ok”.Crown/rump length and gestational age are closely compared with each other until around the end of the first trimester.

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