Development of a device for simultaneous observation of piezoelectric and ultrasound signals in cancellous bone

A device was developed to simultaneously observe two signals when an ultrasound was irradiated to cancellous bone: a piezoelectric signal generated in the bone and an ultrasound signal propagated through the bone. This device was based on the previously developed "piezoelectric cell (PE-cell)," which is an ultrasound sensor using a cancellous bone specimen as a piezoelectric element, and a receiving device for the ultrasound signal was added. Using this device, both the piezoelectric and ultrasound signal waveforms could be simultaneously observed. From the observed waveforms, it was shown that the piezoelectric signal was related to the ultrasound signal.