The safety of diagnostic ultrasound.
Although there has been no conclusive evidence to suggest that ultrasound is dangerous in pregnancy, precautions would seem sensible. Doctors should minimize patient exposure time but a gesture by the machine manufacturers to incorporate the reduction of acoustic output into their design requirements would be admirable.
D000818:Animals; D004869:Equipment Safety; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012941:Social Responsibility; D014465:Ultrasonics / Q000009:adverse effects / Q000295:instrumentation; D014463:Ultrasonography