Improving the spatial resolution of intravascular ultrasound imaging with synthetic aperture Fourier-based methods

Author

Vray, D. ; Rastello, T. ; Schoofs, F. ; Delachartre, P.

Author_Institution

CREATIS, CNRS, Villeurbanne, France

Volume

2

fYear

1997

fDate

5-8 Oct 1997

Firstpage

1531

Abstract

Intravascular ultrasound imaging using a rotating transducer produces images which includes the Point Spread Function of the imaging system. It results a lack of spatial resolution for the images. After the modelization of the image formation, the authors take into account the characteristics of the PSF in order to suggest an original Synthetic Aperture Focusing Technique (SAFT). The authors propose a kernel for phase-only processing. Improvements in spatial resolution are shown on experimental results for the imaging of steel wires with an imaging system using a rotating transducer operating at 30 MHz

Keywords

biomedical ultrasonics; blood vessels; image resolution; medical image processing; 30 MHz; imaging system point spread function; intravascular ultrasound imaging; medical diagnostic imaging; phase-only processing kernel; rotating transducer; spatial resolution improvement; steel wires; synthetic aperture Fourier-based methods; Apertures; Biomedical transducers; Geometry; Image reconstruction; Reconstruction algorithms; Scattering; Shape; Spatial resolution; Ultrasonic imaging; Ultrasonic transducers;

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.1997.661867

Filename

661867