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Simultaneous quantification of flow and tissue velocities based on multi-angle plane wave imaging

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Abstract
A quantitative angle-independent 2-D modality for flow and tissue imaging based on multi-angle plane wave acquisition was evaluated. Simulations of realistic flow in a carotid artery bifurcation were used to assess the accuracy of the vector Doppler (VD) technique. Reduction in root mean square deviation from 27 cm/s to 6 cm/s and 7 cm/s to 2 cm/s was found for the lateral (v(x)) and axial (v(z)) velocity components, respectively, when the ensemble size was increased from 8 to 50. Simulations of a Couette flow phantom (v(max) = 2.7 cm/s) gave promising results for imaging of slowly moving tissue, with root mean square deviation of 4.4 mm/s and 1.6 mm/s for the x- and z-components, respectively. A packet acquisition scheme providing both B-mode and vector Doppler RF data was implemented on a research scanner, and beamforming and further post-processing was done offline. In vivo results of healthy volunteers were in accordance with simulations and gave promising results for flow and tissue vector velocity imaging. The technique was also tested in patients with carotid artery disease. Using the high ensemble vector Doppler technique, blood flow through stenoses and secondary flow patterns were better visualized than in ordinary color Doppler. Additionally, the full velocity spectrum could be obtained retrospectively for arbitrary points in the image.
Keywords
CAROTID-ARTERY STENOSIS, SPECTRAL DOPPLER ESTIMATION, BLOOD-FLOW, TRANSIENT ELASTOGRAPHY, SPECKLE TRACKING, ULTRASOUND, TRANSVERSE

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Chicago
Kinn Ekroll, Ingvild, Abigaïl Swillens, Patrick Segers, Torbjorn Dahl, Hans Torp, and Lasse Lovstakken. 2013. “Simultaneous Quantification of Flow and Tissue Velocities Based on Multi-angle Plane Wave Imaging.” Ieee Transactions on Ultrasonics Ferroelectrics and Frequency Control 60 (4): 727–738.
APA
Kinn Ekroll, I., Swillens, A., Segers, P., Dahl, T., Torp, H., & Lovstakken, L. (2013). Simultaneous quantification of flow and tissue velocities based on multi-angle plane wave imaging. IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 60(4), 727–738.
Vancouver
1.
Kinn Ekroll I, Swillens A, Segers P, Dahl T, Torp H, Lovstakken L. Simultaneous quantification of flow and tissue velocities based on multi-angle plane wave imaging. IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL. 2013;60(4):727–38.
MLA
Kinn Ekroll, Ingvild, Abigaïl Swillens, Patrick Segers, et al. “Simultaneous Quantification of Flow and Tissue Velocities Based on Multi-angle Plane Wave Imaging.” IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL 60.4 (2013): 727–738. Print.
@article{3194411,
  abstract     = {A quantitative angle-independent 2-D modality for flow and tissue imaging based on multi-angle plane wave acquisition was evaluated. Simulations of realistic flow in a carotid artery bifurcation were used to assess the accuracy of the vector Doppler (VD) technique. Reduction in root mean square deviation from 27 cm/s to 6 cm/s and 7 cm/s to 2 cm/s was found for the lateral (v(x)) and axial (v(z)) velocity components, respectively, when the ensemble size was increased from 8 to 50. Simulations of a Couette flow phantom (v(max) = 2.7 cm/s) gave promising results for imaging of slowly moving tissue, with root mean square deviation of 4.4 mm/s and 1.6 mm/s for the x- and z-components, respectively. A packet acquisition scheme providing both B-mode and vector Doppler RF data was implemented on a research scanner, and beamforming and further post-processing was done offline. In vivo results of healthy volunteers were in accordance with simulations and gave promising results for flow and tissue vector velocity imaging. The technique was also tested in patients with carotid artery disease. Using the high ensemble vector Doppler technique, blood flow through stenoses and secondary flow patterns were better visualized than in ordinary color Doppler. Additionally, the full velocity spectrum could be obtained retrospectively for arbitrary points in the image.},
  author       = {Kinn Ekroll, Ingvild and Swillens, Abiga{\"i}l and Segers, Patrick and Dahl, Torbjorn and Torp, Hans  and Lovstakken, Lasse},
  issn         = {0885-3010},
  journal      = {IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL},
  keyword      = {CAROTID-ARTERY STENOSIS,SPECTRAL DOPPLER ESTIMATION,BLOOD-FLOW,TRANSIENT ELASTOGRAPHY,SPECKLE TRACKING,ULTRASOUND,TRANSVERSE},
  language     = {eng},
  number       = {4},
  pages        = {727--738},
  title        = {Simultaneous quantification of flow and tissue velocities based on multi-angle plane wave imaging},
  url          = {http://dx.doi.org/10.1109/TUFFC.2013.2621},
  volume       = {60},
  year         = {2013},
}

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