A piezoelectric bone hydrophone for medical ultrasound applications

Author

Singh, V.R. ; Yadav, Sanjay ; Ahmed, Aftab

Author_Institution

Nat. Phys. Lab., New Delhi, India

fYear

1988

fDate

4-7 Nov. 1988

Firstpage

755

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IEMBS.1988.95003

Filename

95003