A new Fourier-based multistatic synthetic aperture focusing technique for intravascular ultrasound imaging

Author

Rastello, T. ; Haas, C. ; Vray, D. ; Krueger, M. ; Schroeder, K. ; Brusseau, E. ; Gimenez, G. ; Ermer, H.

Author_Institution

CREATIS, CNRS, Villeurbanne, France

Volume

2

fYear

1998

fDate

1998

Firstpage

1725

Abstract

Synthetic aperture processing yields an effective lateral resolution for intravascular ultrasound imaging. This processing is generally performed with time domain summation. In this paper, we derive a new synthetic aperture inversion method based on the Fourier domain. The analysis of the image formation shows that the frequency modulation of the PSF could be useful to improve the lateral resolution by matched filtering. Experimental results with a wire phantom show the effectiveness of the inversion and the advantages of the Fourier-based inversion method

Keywords

Fourier analysis; acoustic signal processing; array signal processing; biomedical ultrasonics; blood vessels; frequency modulation; frequency-domain analysis; image reconstruction; image resolution; matched filters; medical image processing; ultrasonic focusing; Fourier-based inversion method; Fourier-based multistatic; effective lateral resolution; frequency modulation; image formation analysis; image reconstruction; intravascular ultrasound imaging; matched filtering; point spread function; spatial undersampling; synthetic aperture focusing technique; wire phantom; Acoustic scattering; Delay; Focusing; Frequency; Image analysis; Image resolution; Image sampling; RF signals; Spatial resolution; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.765282

Filename

765282