Speckle tracking for multi-dimensional flow estimation.

Speckle tracking methods overcome the major limitations of current Doppler methods for flow imaging and quantification: angle dependence and aliasing. In this paper, we review the development of speckle tracking, with particular attention to the advantages and limitations of two-dimensional algorithms that use a single transducer aperture. Ensemble tracking, a recent speckle tracking method based upon parallel receive processing, is described. Experimental results with ensemble tracking indicate the ability to measure laminar flow in a phantom at a beam-vessel angle of 60 degrees, which had not been possible with previous 2D speckle tracking methods. Finally, important areas for future research in speckle tracking are briefly summarized.

[1]  B. Friemel,et al.  Experimental velocity profiles and volumetric flow via two-dimensional speckle tracking. , 1995, Ultrasound in medicine & biology.

[2]  G E Trahey,et al.  Potential and limitations of angle-independent flow detection algorithms using radio-frequency and detected echo signals. , 1991, Ultrasonic imaging.

[3]  O. Bonnefous.  Measurement of the complete (3D) velocity vector of blood flows , 1988, IEEE 1988 Ultrasonics Symposium Proceedings..

[4]  R. Gill.  Measurement of blood flow by ultrasound: accuracy and sources of error. , 1985, Ultrasound in medicine & biology.

[5]  B. J. Geiman,et al.  2-D motion estimation using two parallel receive beams , 2001, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[6]  Marc D Weinshenker,et al.  Explososcan: a parallel processing technique for high speed ultrasound imaging with linear phased arrays. , 1984 .

[7]  L.N. Bohs,et al.  A novel method for angle independent ultrasonic imaging of blood flow and tissue motion , 1991, IEEE Transactions on Biomedical Engineering.

[8]  G. Trahey,et al.  Angle Independent Ultrasonic Detection of Blood Flow , 1987, IEEE Transactions on Biomedical Engineering.

[9]  L. Wilson,et al.  Measurement of velocity of propagation from ultrasonic pulse-echo data. , 1982, Ultrasound in medicine & biology.

[10]  S.W. Smith,et al.  High-speed ultrasound volumetric imaging system. I. Transducer design and beam steering , 1991, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[11]  B. J. Geiman,et al.  Ensemble tracking for 2D vector velocity measurement: Experimental and initial clinical results , 1998, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[12]  K.W. Ferrara,et al.  A theoretical and experimental analysis of the received signal from disturbed blood flow , 1994, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[13]  I. Hein.  3-D flow velocity vector estimation with a triple-beam lens transducer-experimental results , 1997, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[14]  Harvey F. Silverman,et al.  A Class of Algorithms for Fast Digital Image Registration , 1972, IEEE Transactions on Computers.

[15]  O T von Ramm,et al.  Explososcan: A Parallel Processing Technique For High Speed Ultrasound Imaging With Linear Phased Arrays , 1985, Medical Imaging.

[16]  B. Friemel,et al.  Speckle decorrelation due to two-dimensional flow gradients , 1998, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[17]  R A Levine,et al.  Automated flow rate calculations based on digital analysis of flow convergence proximal to regurgitant orifices. , 1993, Journal of the American College of Cardiology.

[18]  W.D. O'Brien,et al.  Current time-domain methods for assessing tissue motion by analysis from reflected ultrasound echoes-a review , 1993, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[19]  W. O’Brien,et al.  A comparison of the motion tracking of 2-D ultrasonic B-mode tissue images with a calibrated phantom , 1991, IEEE 1991 Ultrasonics Symposium,.

[20]  B. J. Geiman,et al.  A novel interpolation strategy for estimating subsample speckle motion. , 2000, Physics in medicine and biology.

[21]  G E Trahey,et al.  A real time system for quantifying and displaying two-dimensional velocities using ultrasound. , 1993, Ultrasound in medicine & biology.