Journal
ULTRASONICS
Volume 38, Issue 1-8, Pages 369-375Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0041-624X(99)00182-1
Keywords
angle-independent flow; flow quantification; flow velocity; vector velocity
Funding
- NHLBI NIH HHS [R01-HL-50104] Funding Source: Medline
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Speckle tracking methods overcome the major limitations of current Doppler methods for how 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. (C) 2000 Elsevier Science B.V. All rights reserved.
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