Assumption: At least one sonogram is a requirement for a healthy pregnancy.

These studies of over 14,000 low-risk moms shows that sonograms had no effect on the outcome of pregnancies.  There is no conclusive evidence that sonograms should be routine for all pregnancies.

My Views:
I know this finding is a surprise to many.  It seems it is just assumed that you will have at least one sonogram during pregnancy in this country.  Why?  This is less clear.  The American Congress of Obstetricians and Gynecologists (ACOG) doesn’t even recommend that all women undergo sonograms during pregnancy.  They suggest that sonograms be reserved for high-risk pregnancies and those with medical need.  Since long-range effects of sonograms have not been studied extensively, I see no reason that everyone should undergo these tests.  Yes, they are assumed safe, but until we have long term studies I would rather each woman be assessed individually to see if she needs a sonogram.