Are ultrasounds safer than x-rays?

Yes: Yes, ultrasound is safer than x-rays. The energy source for ultrasound is sound waves which has been established as safe in limited procedure times during pregnancy. X-ray energy source is radiation which has been established to be detrimental in higher doses to developing in utero babies.

Yes: Sound wave energy from ultrasounds are considered to be safe during pregnancies, but radiation energy from x-rays have been found to be detrimental to the developing fetus.

Yes: For pregnant women, ultrasounds are safer than x rays because sonograms use sound waves, which do not affect the baby. On the other hand, ct scans and x rays use radiation, which do have risks to the unborn child at very high levels. Discuss this with your doctor.

X-rays: contribute to a slight theoretical increased lifetime cancer risk. Diagnostic ultrasound has no known deleterious effects. All else being equal, then, to the best of our knowledge, US would be considered safer.