Title :
A piezoelectric bone hydrophone for medical ultrasound applications
Author :
Singh, V.R. ; Yadav, Sanjay ; Ahmed, Aftab
Author_Institution :
Nat. Phys. Lab., New Delhi, India
Abstract :
The piezoelectric property of bone has been utilized to develop a hydrophone. Small pieces of bone, in vitro, are cut and shaped to circular form with a pencil-type tip which is coated with a conductive silver point. This bone element is the sensing element of the hydrophone. Electrical leads are connected for excitation and the hydrophone is tested. The frequency response is obtained over a frequency range of 1-30 MHz. Two peaks of maximum output, at 5.4 MHz and 17.5 MHz, were found. These may be due to the fundamental frequency and its higher harmonics. Due to the wide frequency band, the hydrophone has potential use in studying high-frequency (10-MHz), nonlinear ultrasound propagation in different biological media.<>
Keywords :
bioelectric phenomena; biomedical equipment; biomedical ultrasonics; bone; hydrophones; piezoelectric devices; ultrasonic equipment; 1 to 30 MHz; biological media; conductive Ag point; fundamental frequency; harmonics; medical ultrasound; nonlinear ultrasound propagation; pencil-type tip; piezoelectric bone hydrophone;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.95003
