Ultrasound during pregnancy
Ultrasound imaging has been done during pregnancy for over three decades.
It has proven to be a very useful and very effective diagnostic procedure.
A number of epidemiological studies of pregnancy ultrasound exposure have been done to look at its safety.
These include studies with a highly sophisticated research design.
There is no convincing evidence for any danger from ultrasound during pregnancy.
(Reference: Ziskin MC.
Intrauterine effects of ultrasound: Human epidemiology.
Teratology 59:252-260, 1999.)