Ultrasound scans can be heard by a fetus, researchers say, a finding that is sure to surprise many physicians. There is no evidence, however, that this is harmful. By definition, ultrasound is sound ...

An ultrasound stethoscope, which is immune to interference from background noise, could help medics care for injured soldiers or civilians in very noisy settings, researchers say. The stethoscope is a ...

A pregnancy ultrasound is a test that uses high-frequency sound waves to image the developing baby as well as the mother’s reproductive organs. The average number of ultrasounds varies with each ...

uBeam CEO Meredith Perry speaks at the 2015 PTTOW! Annual Summit at Terrenea Resort on May 7, 2015 in Rancho Palos Verdes, California. (Photo: Imeh Akpanudosen/Getty Images) UPDATE: A previous version ...