Development of small aperture polymer transducers for high frequency imaging

Author

Lockwood, G.R. ; Hazzard, C.R.

Author_Institution

Dept. of Bioeng., Cleveland Clinic Found., OH, USA

Volume

2

fYear

1997

fDate

5-8 Oct 1997

Firstpage

1717

Abstract

Poor receiver sensitivity has hampered the development of small aperture (⩽2 mm diameter) polymer transducers for high frequency (30-80 MHz) medical imaging. The authors have developed a miniature spherically shaped polymer transducer incorporating an integrated circuit pre-amplifier. The pre-amplifier reduces the problem of poor receiver sensitivity by providing a high input impedance buffer. Using this approach, the amplitude of the pulse-echo response for a 1 mm diameter transducer is increased ten times compared with an identical transducer using an external 50 Ω pre-amplifier

Keywords

biomedical electronics; biomedical transducers; biomedical ultrasonics; polymers; preamplifiers; ultrasonic transducers; 1 mm; 2 mm; 30 to 80 MHz; 50 ohm; high frequency imaging; high input impedance buffer; integrated circuit preamplifier; medical diagnostic imaging; medical instrumentation; miniature spherically shaped polymer transducer; poor receiver sensitivity; small aperture polymer transducers; Apertures; Biomedical imaging; Biomedical transducers; Frequency; Impedance; Integrated circuit modeling; Polymers; Transfer functions; Ultrasonic transducers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE

Conference_Location

Toronto, Ont.

ISSN

1051-0117

Print_ISBN

0-7803-4153-8

Type

conf

DOI

10.1109/ULTSYM.1997.663342

Filename

663342