Title :
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
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;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.991991
