Combination of finite element simulations and linear systems theory for pulse shaping of piezoelectric transducers used in therapy

Author

Dreyer, Thomas ; Riedlinger, Rainer E.

Author_Institution

Inst. fur Hochstfrequenztechnik und Elektron./Akustik, Karlsruhe Univ., Germany

Volume

2

fYear

2002

fDate

8-11 Oct. 2002

Firstpage

1285

Abstract

A simulation procedure is presented to calculate the focal ultrasound pressure pulse from the driving voltage of a piezoelectric composite transducer or to calculate the required voltage from a given focal pressure pulse. The description of the transducer system including the driving circuit is done by linear systems theory. A transducer transfer function is derived by transient finite element simulations of the transducer structure. Focusing is assumed to be linear, which is valid for small amplitudes. Measurements validate the model.

Keywords

biomedical transducers; biomedical ultrasonics; finite element analysis; piezoelectric transducers; ultrasonic transducers; driving circuit; finite element simulations; focal ultrasound pressure pulse; linear systems theory; piezoelectric transducers; pulse shaping; therapy; transducer transfer function; Circuit simulation; Finite element methods; Linear systems; Medical treatment; Piezoelectric transducers; Pulse shaping methods; Transfer functions; Ultrasonic imaging; Ultrasonic transducers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-7582-3

Type

conf

DOI

10.1109/ULTSYM.2002.1192529

Filename

1192529