Ultrasound system for acoustic impedance profile reconstruction

Author

Pedersen, Peter C. ; Lifshitz, Ilan

Author_Institution

Dept. of Electr. Eng., Worcester Polytech. Inst., MA, USA

fYear

1988

fDate

4-7 Nov. 1988

Firstpage

468

Abstract

An ultrasound measurement system is described that will generate the acoustic impedance profile of a layered medium from the reflection impulse response and with a priori knowledge of the transmitting/receiving transducers and the attenuation of the medium. The theory, the experimental system, and results are presented. The signal processing includes Weiner filtering for the purpose of compensating for the bandlimited response of the transducers, attenuation compensation, detection of the reflection location and amplitude, and the impedance profile reconstruction from the train of reflection impulses. Measurements have been carried out on multilayered phantoms constructed from thin layers. Results are presented for a three-layer phantom.<>

Keywords

acoustic impedance; biomedical equipment; biomedical ultrasonics; 3-layer phantom; Weiner filtering; acoustic impedance profile reconstruction; multilayered phantoms; reflection impulses; signal processing; transducer bandlimited response; ultrasound system;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE

Conference_Location

New Orleans, LA, USA

Print_ISBN

0-7803-0785-2

Type

conf

DOI

10.1109/IEMBS.1988.94612

Filename

94612