HIFU transducer with controllable curvature

Author

Jungsoon Kim ; Moojoon Kim ; Kanglyeol Ha

Author_Institution

Dept. of Media Eng., Tongmyong Univ., Busan, South Korea

fYear

2013

fDate

21-25 July 2013

Firstpage

1133

Lastpage

1136

Abstract

A method of controlling the focal length of concave ultrasonic transducers using a flexible surface with arrayed piezoelectric elements is proposed. The surface made of a silicon rubber has a different curvature depending on the air pressure of the inner space of the transducer housing. The acoustic fields of the transducer were measured and compared with the simulated ones. The ultrasonic field from the transducer converged with a different shape with the deflection of the surface. We confirmed the possibility that the focal point of the transducer could be easily controlled by the method.

Keywords

acoustic field; biomedical transducers; biomedical ultrasonics; piezoelectric transducers; rubber; ultrasonic transducer arrays; HIFU transducer; acoustic fields; concave ultrasonic transducers; controllable curvature; focal length; high-intensity focused ultrasound transducer; piezoelectric elements; silicon rubber surface; ultrasonic field; Electron tubes; Generators; ISO; Oscilloscopes; Silicon; Transducers; Ultrasonic variables measurement; array transducer; concave control; concave-type; flexible surface; focal length;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2013 IEEE International

Conference_Location

Prague

ISSN

1948-5719

Print_ISBN

978-1-4673-5684-8

Type

conf

DOI

10.1109/ULTSYM.2013.0290

Filename

6725037