In the medical applications of ultrasonic imaging, sound waves of high frequency are usually employed to produce in-depth cross-sectional images of internal organs. Special multi-element transducers ...

Parametric array loudspeakers exploit nonlinear acoustic phenomena to generate highly directional audible sound beams from ultrasonic carriers. This technology relies on the self-demodulation of ...

Researchers at Fudan University are developing a reconstruction algorithm that enables quantitative bone imaging using ultrasonic computed tomography. (Courtesy: Dean Ta) Osteoporosis is a bone ...

Advances in ultrasound—the same imaging technology that uses sound waves to allow doctors to monitor babies in utero—are being applied by engineers at the University of California San Diego to make ...