Two-Dimensional Flow Imaging in the Carotid Bifurcation Using a Combined Speckle Tracking and Phase-Shift Estimator: A Study Based on Ultrasound Simulations and in vivo Analysis

Swillens, Abigaïl; Segers, Patrick; Løvstakken, Lasse

doi:10.1016/j.ultrasmedbio.2010.06.021

Cited by 20 publications

(15 citation statements)

References 24 publications

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“…Although, comparing with speckle tracking methods, dual-beam Doppler flow vector estimation methods are more robust in cases where blood flow partially goes out of the imaging plane such that the measured flow vector is merely a planar projection of the true 3D flow vector [28], [29], it suffers from one critical weakness: that is, any errors in one of the two frequency shift measurements would give rise to significant vector estimation variance. This issue can be overcome by extending the principles to a multi-beam implementation, as will be discussed in the next subsection.…”

Section: B Dual-beam Implementationsmentioning

confidence: 99%

See 1 more Smart Citation

Ultrasound Vector Flow Imaging: I: Sequential Systems

Jensen

Nikolov²,

et al. 2016

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

108

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Abstract-The paper gives a review of the most important methods for blood velocity vector flow imaging (VFI) for conventional, sequential data acquisition. This includes multibeam methods, speckle tracking, transverse oscillation, color flow mapping derived vector flow imaging, directional beamforming, and variants of these. The review covers both 2-D and 3-D velocity estimation and gives a historical perspective on the development along with a summary of various vector flow visualization algorithms. The current state-of-the-art is explained along with an overview of clinical studies conducted and methods for presenting and using VFI. A number of examples of VFI images are presented, and the current limitations and potential solutions are discussed.

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Section: B Dual-beam Implementationsmentioning

confidence: 99%

“…Published images typically include straight tube phantoms with steady flow profiles [134] and pilot in-vivo images of the human carotid artery [81], [45], [29], [133], [135]. This display approach has also been used in both single-line, multigate Doppler methods [136] and those that render image maps of flow vectors [133].…”

Section: A Arrow Displaysmentioning

confidence: 99%

Ultrasound Vector Flow Imaging: I: Sequential Systems

Jensen

Nikolov²,

et al. 2016

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

108

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“…EC1 to EC4 are the diameter of ECA, and CC1, CC2 means that of ICA. We establish the geometry by AutoCAD ® [6].…”

Section: Geometric Model Constructionmentioning

confidence: 99%

Computer Simulation of Stenotic Carotid Bifurcations Hemodynamic and Ultrasonography

Li¹,

Yang²

2014

TOBIOTJ

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Abstract:The carotid sinus of the carotid artery (CA) bifurcation is one of the favored sites for the genesis and development of atherosclerotic lesions. The direct reason is carotid arteries bifurcation and stenoses may lead to great flow pattern change. Aim of this article is to investigate the effect of different eccentric stenosis of internal carotid artery on blood flow. The blood flow in artery is simulated numerically and the simulation is based on convicted reasonable of vascular profile and flow environment in vivo. The simulation or the computer flow dynamic calculation reveals the eccentric stenosis can make great effort to the flow pattern. And more serious stenosis proliferation can be generated. Doppler ultrasound (DUS) are widely used in blood flow detection for the diagnosis of cardiovascular diseases (CAD). It is the gold standard of the diagnosis of vessel related diseases and the color sonography display is familiar for clinicians and internist, we simulated the color sonography of stenosis carotid arteries bifurcation mocked the DUS display method. The results are proved to be visual, detailed and accurate that it can more directly use in clinic. All simulation above can alleviate the effects of measurement errors and can be used as the complement of ordinary ultrasound measures.

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“…More work has been published recently on the combination of ultrafast imaging and ST, for the assessment of blood velocity [28,29,38] and vessel wall strain [39][40][41][42]. Here, subsample resolution displacement estimates were obtained by performing 1D [28,29,38,43] or 2D [42] parabolic interpolation of the pattern matching function.…”

Section: Introductionmentioning

confidence: 99%

“…Here, subsample resolution displacement estimates were obtained by performing 1D [28,29,38,43] or 2D [42] parabolic interpolation of the pattern matching function. No clear reasoning was provided concerning the match between this interpolation function and the sampling, or shape, of the pattern matching function, which is a direct result of the spacing in the ultrasound sampling grid.…”

Section: Introductionmentioning

confidence: 99%

A PSF-Shape-Based Beamforming Strategy for Robust 2D Motion Estimation in Ultrafast Data

et al. 2018

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This paper presents a framework for motion estimation in ultrafast ultrasound data. It describes a novel approach for determining the sampling grid for ultrafast data based on the system's point-spread-function (PSF). As a consequence, the cross-correlation functions (CCF) used in the speckle tracking (ST) algorithm will have circular-shaped peaks, which can be interpolated using a 2D interpolation method to estimate subsample displacements. Carotid artery wall motion and parabolic blood flow simulations together with rotating disk experiments using a Verasonics Vantage 256 are used for performance evaluation. Zero-degree plane wave data were acquired using an ATL L5-12 (f c = 9 MHz) transducer for a range of pulse repetition frequencies (PRFs), resulting in 0-600 µm inter-frame displacements. The proposed methodology was compared to data beamformed on a conventionally spaced grid, combined with the commonly used 1D parabolic interpolation. The PSF-shape-based beamforming grid combined with 2D cubic interpolation showed the most accurate and stable performance with respect to the full range of inter-frame displacements, both for the assessment of blood flow and vessel wall dynamics. The proposed methodology can be used as a protocolled way to beamform ultrafast data and obtain accurate estimates of tissue motion.

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Two-Dimensional Flow Imaging in the Carotid Bifurcation Using a Combined Speckle Tracking and Phase-Shift Estimator: A Study Based on Ultrasound Simulations and in vivo Analysis

Cited by 20 publications

References 24 publications

Ultrasound Vector Flow Imaging: I: Sequential Systems

Ultrasound Vector Flow Imaging: I: Sequential Systems

Computer Simulation of Stenotic Carotid Bifurcations Hemodynamic and Ultrasonography

A PSF-Shape-Based Beamforming Strategy for Robust 2D Motion Estimation in Ultrafast Data

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