Title :
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
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;
Conference_Titel :
Ultrasonics Symposium, 2004 IEEE
Print_ISBN :
0-7803-8412-1
DOI :
10.1109/ULTSYM.2004.1417806
