Development and validation of echo PIV

Kim, Hyoung-Bum; Hertzberg, Jean; Shandas, Robin

doi:10.1007/s00348-003-0743-5

Cited by 172 publications

(137 citation statements)

References 20 publications

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“…The small deviations observed are probably caused by measurement errors caused by the flow probe, which result in errors in the CFD-derived velocity profiles. Kim et al (2004b) have shown that the accuracy and resolution of EchoPIV are improved by application of iterative schemes (Hart 2000) and smart window offsetting (Westerweel et al 1997). In principle, these techniques could be applied to the RF-data acquired in this study.…”

Section: Discussionmentioning

confidence: 98%

Perpendicular ultrasound velocity measurement by 2D cross correlation of RF data. Part A: validation in a straight tube

et al. 2010

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An ultrasound velocity assessment technique was validated, which allows the estimation of velocity components perpendicular to the ultrasound beam, using a commercially available ultrasound scanner equipped with a linear array probe. This enables the simultaneous measurement of axial blood velocity and vessel wall position, rendering a viable and accurate flow assessment. The validation was performed by comparing axial velocity profiles as measured in an experimental setup to analytical and computational fluid dynamics calculations. Physiologically relevant pulsating flows were considered, employing a blood analog fluid, which mimics both the acoustic and rheological properties of blood. In the core region (|r|/a \ 0.9), an accuracy of 3 cm s -1 was reached. For an accurate estimation of flow, no averaging in time was required, making a beat to beat analysis of pulsating flows possible.

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Section: Discussionmentioning

confidence: 98%

Perpendicular ultrasound velocity measurement by 2D cross correlation of RF data. Part A: validation in a straight tube

et al. 2010

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“…Echocardiography techniques [10,11], with higher spatio-temporal resolution make an alternative to PC-MRI. However, echocardiography only gives access to velocity components directed towards or away from the ultrasonic beam, while one would want to measure the full 3D flow vectors.…”

Section: Recent Technological Innovations In Imaging Techniques Have mentioning

confidence: 99%

Image-based large-eddy simulation in a realistic left heart

2014

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“…2 The Echo-PIV concept has been proven in vascular measurements and validated in accurate in vitro settings. 52,77,100 The technique underwent a careful validation utilizing an in vitro model of the LV and comparing the results with those coming from laser-based digital Particle Imaging Velocimetry. 46,99 Echo-PIV has the advantage of permitting recording at very high frame rate (up to over 200 Hz) and allowing beat-to-beat variability.…”

Section: Echocardiographic Pivmentioning

confidence: 99%

Left Ventricular Fluid Mechanics: The Long Way from Theoretical Models to Clinical Applications

Pedrizzetti

Domenichini

2014

Ann Biomed Eng

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Abstract-The flow inside the left ventricle is characterized by the formation of vortices that smoothly accompany blood from the mitral inlet to the aortic outlet. Computational fluid dynamics permitted to shed some light on the fundamental processes involved with vortex motion. More recently, patient-specific numerical simulations are becoming an increasingly feasible tool that can be integrated with the developing imaging technologies. The existing computational methods are reviewed in the perspective of their potential role as a novel aid for advanced clinical analysis. The current results obtained by simulation methods either alone or in combination with medical imaging are summarized. Open problems are highlighted and perspective clinical applications are discussed.

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Development and validation of echo PIV

Cited by 172 publications

References 20 publications

Perpendicular ultrasound velocity measurement by 2D cross correlation of RF data. Part A: validation in a straight tube

Perpendicular ultrasound velocity measurement by 2D cross correlation of RF data. Part A: validation in a straight tube

Image-based large-eddy simulation in a realistic left heart

Left Ventricular Fluid Mechanics: The Long Way from Theoretical Models to Clinical Applications

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