Modeling of the temperature increase in ultrasonic transducers

Author

Loyau, V. ; Feuillard, G. ; Tran-Huu-Hue, L.P.

Author_Institution

LUSSI-GIP Ultrasons Univ. Francois Rabelais, Blois, France

Volume

1

fYear

2004

fDate

23-27 Aug. 2004

Firstpage

642

Abstract

The thermal source profile was calculated in the case of an axisymmetric ultrasonic transducer. Coupled with a thermal diffusion equation, these results allow us to calculate the 2D temperature field in the electrical harmonic or pulse regime, but in thermal steady state. Experimental temperature measurements of a transducer in the MHz range are found to be in agreement with theory. Finally, simulation results on a piezocomposite-based single-element transducer dedicated to ultrasonic surgery are presented and discussed for different conditions of use.

Keywords

biomedical ultrasonics; piezoelectric transducers; temperature distribution; thermal diffusion; ultrasonic transducers; 2D temperature field; axisymmetric ultrasonic transducer; electrical harmonic regime operation; piezocomposite-based single-element transducer; pulse regime operation; temperature measurement; thermal diffusion equation; thermal source profile; thermal steady state; transducer temperature increase modeling; ultrasonic surgery; Dielectric losses; Electric resistance; Impedance; Piezoelectric transducers; Probes; Steady-state; Surgery; Temperature; Ultrasonic imaging; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2004 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-8412-1

Type

conf

DOI

10.1109/ULTSYM.2004.1417806

Filename

1417806