Is Ultrasound Safe in Pregnancy?
Ultrasound has been used to check on fetuses for more than 30 years. No reproducible evidence of harm has ever been found in human pregnancy, when using the frequencies and intensities of ultrasound waves currently used for diagnostic ultrasound. There is potential cause for concern using high intensity ultrasound for a prolonged time. Ultrasound should be performed when there is good reason, and exposure should generally be limited to obtaining medical information.