Duplex synthetic aperture imaging with tissue motion compensation

Author

Gammelmark, Kim Løkke ; Jensen, Jørgen Arendt

Author_Institution

Center for Fast Ultrasound Imaging, Tech. Univ. of Denmark, Lyngby, Denmark

Volume

2

fYear

2003

fDate

5-8 Oct. 2003

Firstpage

1569

Abstract

This paper investigates a method for tissue motion estimation and compensation in synthetic transmits aperture imaging. The approach finds the tissue velocity and the direction of the motion at very tissue region by cross-correlating high resolution lines beamformed along multiple directions at each image points. Compensation is applied in the beamformer by tracking the image points using the velocity and angle estimates from the closest estimation point. Simulation results using Field II show nearly perfect motion compensation with no appreciable difference in contrast resolution after compensation. Phantom measurements show similar performance with differences in contrast resolution of 29% and 0.61% before and after compensation, respectively.

Keywords

imaging; motion compensation; motion estimation; phantoms; tissue engineering; Field II; angle estimates; beamformer compensation; contrast resolution; cross-correlating lines; duplex synthetic aperture imaging; estimation point; high resolution lines; image points; multiple directions; phantom measurements; synthetic transmits aperture imaging; tissue motion compensation; tissue motion estimation; tissue region; tissue velocity; velocity estimates; Chirp modulation; High-resolution imaging; Image quality; Image resolution; Imaging phantoms; Motion compensation; Motion estimation; Phased arrays; Spatial resolution; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics, 2003 IEEE Symposium on

Print_ISBN

0-7803-7922-5

Type

conf

DOI

10.1109/ULTSYM.2003.1293207

Filename

1293207