A method of ultrasonic bone-therapy subjects a bone to an ultrasonic excitation pulse signal of finite duration, supplied to a transducer next to the bone, and involving a sinusoidal signal in the ultrasonic region to approximately 2 MHz peculiarly modulated by a sinusoidal signal with frequency...http://www.google.com/patents/US5752924?utm_source=gb-gplus-sharePatent US5752924 - Ultrasonic bone-therapy apparatus and method
