Live ultrasound-based particle visualization of blood flow in the heart

Angelelli, Paolo; Snare, Sten Roar; Nyrnes, Siri Ann; Brückner, Stefan; Hauser, Helwig; Løvstakken, Lasse

doi:10.1145/2643188.2643200

Cited by 9 publications

(6 citation statements)

References 19 publications

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“…Previous validation of BST in technical publications is summarized in Supplemental Table 1. 1,2,20,[23][24][25] In this work, we further validated pediatric BST on the basis of images obtained with a 6 MHz phasedarray probe and using an in-house-made rotating tissue-mimicking phantom with a known velocity profile. The phantom had a constant angular velocity (285 rounds/min), resulting in a span of velocities within the phantom between 0 m/sec at the center and 1.5 m/sec at the edges.…”

Section: Accuracy Of the Velocity Estimates In Vitro And In Vivomentioning

confidence: 99%

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Blood Speckle-Tracking Based on High–Frame Rate Ultrasound Imaging in Pediatric Cardiology

Nyrnes

Fadnes

Wigen

et al. 2020

Journal of the American Society of Echocardiography

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Background: Flow properties play an important role in cardiac function, remodeling, and morphogenesis but cannot be displayed in detail with today's echocardiographic techniques. The authors hypothesized that blood speckle-tracking (BST) could visualize and quantify flow patterns. The aim of this study was to determine the feasibility, accuracy, and potential clinical applications of BST in pediatric cardiology.Methods: BST is based on high-frame rate ultrasound, using a combination of plane-wave imaging and parallel receive beamforming. Pattern-matching techniques are used to quantify blood speckle motion. Accuracy of BST velocity measurements was validated using a rotating phantom and by comparing BST-derived inflow velocities with pulsed-wave Doppler obtained in the left ventricles of healthy control subjects. To test clinical feasibility, 102 subjects (21 weeks to 11.5 years of age) were prospectively enrolled, including healthy fetuses (n = 4), healthy control subjects (n = 51), and patients with different cardiac diseases (n = 47). Results:The phantom data showed a good correlation (r = 0.95, with a tracking quality threshold of 0.4) between estimated BST velocities and reference velocities down to a depth of 8 cm. There was a good correlation (r = 0.76) between left ventricular inflow velocity measured using BST and pulsed-wave Doppler. BST displayed lower velocities (mean 6 SD, 0.59 6 0.14 vs 0.82 6 0.21 m/sec for pulsed-wave Doppler). However, the velocity amplitude in BST increases with reduced smoothing. The clinical feasibility of BST was high, as flow patterns in the area of interest could be visualized in all but one case (>99%).Conclusions: BST is highly feasible in fetal and pediatric echocardiography and provides a novel approach for visualizing blood flow patterns. BST provides accurate velocity measurements down to 8 cm, but compared with pulsed-wave Doppler, BST displays lower velocities. Studying blood flow properties may provide novel insights into the pathophysiology of pediatric heart disease and could become an important diagnostic tool. (J

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Section: Accuracy Of the Velocity Estimates In Vitro And In Vivomentioning

confidence: 99%

“…As the visual impression of BST is better when looking at videos compared with single frames, each example is linked to videos that demonstrate the BST technique using a particle animation technique. 25…”

Section: Selected Patient Examplesmentioning

confidence: 99%

Blood Speckle-Tracking Based on High–Frame Rate Ultrasound Imaging in Pediatric Cardiology

Nyrnes

Fadnes

Wigen

et al. 2020

Journal of the American Society of Echocardiography

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“…To put an end to this obstacle, Fadnes et al introduced a contrast-free procedure to track the native speckles of blood [93]. This speckle-tracking tool was shown to offer better visualization and quantification of septal defect-a congenital heart disease in which there is an opening in the septum-in neonates [94]. It has been proposed in the context of high-frame-rate echocardiography (see Section 26.8) and adapted for transthoracic echocardiographic in the adults (Figure 26.8).…”

Section: Potential Clinical Utility Of Vortex Flow Imaging In Echo-pivmentioning

confidence: 99%

Introduction to speckle tracking in cardiac ultrasound imaging

2018

Handbook of Speckle Filtering and Tracking in Cardiovascular Ultrasound Imaging and Video

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In this chapter, we will first recall some basic principles of speckle tracking. The fundamentals of speckle tracking in a wider context are essentially described in Chapter 13. We will then treat speckle-tracking echocardiography and echocardiographic particle image velocimetry (echo-PIV) and indicate a number of clinical applications in the context of evaluation of cardiac function. We will then briefly introduce color Doppler approaches complementary to speckle tracking. We will finally present how speckle-tracking techniques could benefit from highframe-rate echocardiography (also called ''ultrafast echocardiography''). We will conclude with the expected contribution of high-frame-rate ultrasound for speckle tracking in three-dimensional (3-D) echocardiography.

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“…One of them is the application of smoothed particle hydrodynamics principles to render the multi-directional nature of hemodynamics inside blood vessels [152]. Another is the dynamic depiction of flow trajectories as tailored pathlets to track the spatio-temporal progression of systolic and diastolic flow dynamics inside heart chambers and the aorta [153], [154], [155], [117]. The latter is the computation of Lagrangian coherent structures to depict the topology of blood transport.…”

Section: Dynamic Visualizationmentioning

confidence: 99%

Ultrasound Vector Flow Imaging: I: Sequential Systems

Jensen

Nikolov²,

et al. 2016

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

105

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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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Live ultrasound-based particle visualization of blood flow in the heart

Cited by 9 publications

References 19 publications

Blood Speckle-Tracking Based on High–Frame Rate Ultrasound Imaging in Pediatric Cardiology

Blood Speckle-Tracking Based on High–Frame Rate Ultrasound Imaging in Pediatric Cardiology

Introduction to speckle tracking in cardiac ultrasound imaging

Ultrasound Vector Flow Imaging: I: Sequential Systems

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