A new high resolution color flow system using an eigendecomposition-based adaptive filter for clutter rejection

Author

Kruse, Dustin E. ; Ferrara, Katherine W.

Author_Institution

Dept. of Biomed. Eng., California Univ., Davis, CA, USA

Volume

49

Issue

10

fYear

2002

Firstpage

1384

Lastpage

1399

Abstract

We present a new signal processing strategy for high frequency color flow mapping in moving tissue environments. A new application of an eigendecomposition-based clutter rejection filter is presented with modifications to deal with high blood-to-clutter ratios (BCR). Additionally, a new method for correcting blood velocity estimates with an estimated tissue motion profile is detailed. The performance of the clutter filter and velocity estimation strategies is quantified using a new swept-scan signal model. In vivo color flow images are presented to illustrate the potential of the system for mapping blood flow in the microcirculation with external tissue motion.

Keywords

adaptive filters; biomedical ultrasonics; blood flow measurement; clutter; colour; eigenvalues and eigenfunctions; image resolution; medical image processing; ultrasonic imaging; HF colour flow mapping; blood flow mapping; blood velocity estimates correction; clutter rejection filter; clutter suppression performance; echoes; eigendecomposition-based adaptive filter; estimated tissue motion profile; high blood-to-clutter ratios; high frequency color flow mapping; high resolution colour flow system; in vivo color flow images; microcirculation; moving tissue environments; signal processing strategy; swept-scan signal model; Adaptive filters; Blood flow; Clutter; Doppler radar; Frequency estimation; In vivo; Motion estimation; Signal resolution; Sonar; Ultrasonic imaging; Algorithms; Blood Flow Velocity; Computer Simulation; Connective Tissue; Fingers; Humans; Image Enhancement; Microcirculation; Models, Biological; Models, Statistical; Movement; Phantoms, Imaging; Signal Processing, Computer-Assisted; Statistics as Topic; Stochastic Processes; Ultrasonography, Doppler, Color;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2002.1041080

Filename

1041080