Sometimes, it is not possible to see all parts of the fetus. Moreover, the images that it produces are not photos and may not provide fully accurate information. It cannot detect all congenital disabilities. The 18-week ultrasound is not a perfect diagnostic tool. For example, if a woman is considering a home birth, the anatomy scan may reveal whether this presents any particular risks. Delivery decisions: The anatomy scan may guide delivery decisions.In some cases - if the pregnant woman has placenta accreta, for example - the delivery may need to take place in an operating room or a specialized hospital. The overall health of the pregnancy: Problems with the placenta or amniotic fluid may mean that the pregnant woman needs to switch to a provider specializing in high risk pregnancies.Whether the fetus is developing normally: The healthcare provider can identify whether the baby is likely to need medical care right after birth. The 18-week ultrasound provides many important pieces of information, including:
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