Analysis of 2-D motion tracking in ultrasound with dual transducers

Abeysekera, Jeffrey M.; Azar, Reza Zahiri; Göksel, Orçun; Rohling, Robert; Salcudean, Septimiu E.

doi:10.1016/j.ultras.2011.07.011

Cited by 7 publications

(2 citation statements)

References 63 publications

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“…These approaches try to make the best use of available data as is, but do not overcome the fundamental difficulty posed by the anisotropic PSF. An alternative approach is to use beam steering to measure displacements at arbitrary angles, and then use the arbitrary angled displacement estimates to determine the axial and lateral displacements as described in [1, 19, 38, 43, 44, 46]. This method uses additional image data to overcome the limitations of a single PSF.…”

Section: Introductionmentioning

confidence: 99%

Recovering vector displacement estimates in quasistatic elastography using sparse relaxation of the momentum equation

Babaniyi

Oberai

Barbone

2016

Inverse Problems in Science and Engineering

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We consider the problem of estimating the 2D vector displacement field in a heterogeneous elastic solid deforming under plane stress conditions. The problem is motivated by applications in quasistatic elastography. From precise and accurate measurements of one component of the 2D vector displacement field and very limited information of the second component, the method reconstructs the second component quite accurately. No a priori knowledge of the heterogeneous distribution of material properties is required. This method relies on using a special form of the momentum equations to filter ultrasound displacement measurements to produce more precise estimates. We verify the method with applications to simulated displacement data. We validate the method with applications to displacement data measured from a tissue mimicking phantom, and in-vivo data; significant improvements are noticed in the filtered displacements recovered from all the tests. In verification studies, error in lateral displacement estimates decreased from about 50% to about 2%, and strain error decreased from more than 250% to below 2%.

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Section: Introductionmentioning

confidence: 99%

Recovering vector displacement estimates in quasistatic elastography using sparse relaxation of the momentum equation

Babaniyi

Oberai

Barbone

2016

Inverse Problems in Science and Engineering

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“…25) Additionally, some researchers have reported other motion estimation methods using a 2D measurement plane. 26,27) However, several studies have reported the differences between the results calculated using the 2D and 3D tissue motion estimators. [28][29][30][31][32] Previous studies have indicated that the differences might be caused by the intrinsic error involved in the estimation of 3D tissue motion in a 2D measurement plane.…”

Section: Introductionmentioning

confidence: 99%

Compensation technique for the intrinsic error in ultrasound motion estimation using a speckle tracking method

Taki

Yamakawa

Shiina

et al. 2015

Jpn. J. Appl. Phys.

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High-accuracy ultrasound motion estimation has become an essential technique in blood flow imaging, elastography, and motion imaging of the heart wall. Speckle tracking has been one of the best motion estimators; however, conventional speckle-tracking methods neglect the effect of outof-plane motion and deformation. Our proposed method assumes that the cross-correlation between a reference signal and a comparison signal depends on the spatio-temporal distance between the two signals. The proposed method uses the decrease in the cross-correlation value in a reference frame to compensate for the intrinsic error caused by out-of-plane motion and deformation without a priori information. The root-meansquare error of the estimated lateral tissue motion velocity calculated by the proposed method ranged from 6.4 to 34% of that using a conventional speckle-tracking method. This study demonstrates the high potential of the proposed method for improving the estimation of tissue motion using an ultrasound speckle-tracking method in medical diagnosis.

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Lateral and shear strain imaging for ultrasound elastography

Varghese¹

2020

Tissue Elasticity Imaging

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Analysis of 2-D motion tracking in ultrasound with dual transducers

Cited by 7 publications

References 63 publications

Recovering vector displacement estimates in quasistatic elastography using sparse relaxation of the momentum equation

Recovering vector displacement estimates in quasistatic elastography using sparse relaxation of the momentum equation

Compensation technique for the intrinsic error in ultrasound motion estimation using a speckle tracking method

Lateral and shear strain imaging for ultrasound elastography

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