Multiple echoes putting down in ultrasound

Author

Caciotta, M. ; Leccese, F.

Author_Institution

Dept. of Electron. Eng., Roma Tre Univ., Italy

Volume

1

fYear

2001

fDate

21-23 May 2001

Firstpage

560

Abstract

The problem of useful echoes identification in an ultrasound (US) signal is faced. The approach used consists in the time rearrangement of a paths matrix built utilizing the electroacoustic equivalence. Some acoustic parameter identifications of slabs encountered by US wave has been demonstrated in particular cases. The precise time positioning of identified useful echoes has been obtained applying an improved maximum likelihood estimator. The large computational load of the method has been faced by using parallel computation. Experiments on software performance are also presented

Keywords

Laplace transforms; acoustic impedance; acoustic signal detection; acoustic signal processing; biomedical ultrasonics; computational complexity; echo; electric impedance; maximum likelihood estimation; medical signal detection; parallel algorithms; signal sampling; virtual instrumentation; Fischer matrix; Laplace transform; acoustic parameter identification; algorithmic filter effects; characteristic impedance; delay line; electroacoustic equivalence; improved maximum likelihood estimator; multiple echoes putting down; parallel algorithm; parallel computation; paths matrix; precise time positioning; slabs; software performance; time rearrangement; transmission line theory; ultrasound signal; useful echoes identification; virtual instrumentation; Acoustic materials; Acoustic reflection; Acoustic signal detection; Acoustic waves; Impedance; Maximum likelihood detection; Maximum likelihood estimation; Parameter estimation; Signal processing; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE

Conference_Location

Budapest

ISSN

1091-5281

Print_ISBN

0-7803-6646-8

Type

conf

DOI

10.1109/IMTC.2001.928881

Filename

928881