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

2

fYear

2001

fDate

2001

Firstpage

1439

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 ratio´s (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 are 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; biological tissues; biomedical ultrasonics; blood flow measurement; clutter; medical signal processing; adaptive filter; blood flow; blood-to-clutter ratio; clutter rejection; eigendecomposition; high-resolution color flow mapping; microcirculation; signal processing; swept-scan signal; tissue motion; ultrasonic imaging; velocity estimation; Acceleration; Adaptive filters; Adaptive signal processing; Biomedical signal processing; Blood flow; Filtering; Frequency; In vivo; Motion estimation; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2001 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-7177-1

Type

conf

DOI

10.1109/ULTSYM.2001.991991

Filename

991991