2002
DOI: 10.1016/s1350-4533(02)00024-3
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The discrimination of stenosed carotid bifurcation models with smooth and irregular plaque surface. Part I. Laser and ultrasonic Doppler flow studies

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Cited by 7 publications
(3 citation statements)
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“…While Lesniak et al [32] have previously investigated Doppler techniques (using a laser Doppler anemometer and a pulsed Doppler flowmeter) to observe alterations in blood-velocity patterns due to surface irregularities in the carotid artery vessel, our approach differed in that surface irregularity in the current study was modelled as physiologically realistic ulcerations, as opposed to simple protrusions on the vessel wall surface. In addition, our precise control of ulcer shape and size allowed us to investigate the effect of ulcer geometry rather than simply introducing a higher frequency of protrusion.…”
Section: Discussionmentioning
confidence: 99%
“…While Lesniak et al [32] have previously investigated Doppler techniques (using a laser Doppler anemometer and a pulsed Doppler flowmeter) to observe alterations in blood-velocity patterns due to surface irregularities in the carotid artery vessel, our approach differed in that surface irregularity in the current study was modelled as physiologically realistic ulcerations, as opposed to simple protrusions on the vessel wall surface. In addition, our precise control of ulcer shape and size allowed us to investigate the effect of ulcer geometry rather than simply introducing a higher frequency of protrusion.…”
Section: Discussionmentioning
confidence: 99%
“…However, PIV and LDV continue to play a key role in applications where CFD remains relatively immature, such as for models with moving boundaries, 30,82 fine embedded devices, 10,39 and especially where flow instabilities and/or turbulence may occur. 4,38 In the past decade, much of the work on imaging of large artery hemodynamics has taken place in the context of medical imaging, with the obvious aim of deriving hemodynamic information from in vivo studies. Some of the earliest work focused on X-ray angiography, which, as a by-product of its relatively high temporal resolution, can be used to visualize flow dynamics during the intra-arterial injection and washout of the contrast agent.…”
Section: Flow Imagingmentioning
confidence: 99%
“…Surveys with respect to in vitro and in vivo measuring methods were presented in the current literature, regarding experimental investigations focused on the determination of pressure and velocity fields in blood vessels (9). Furthermore, ultrasonic Doppler velocimetry (UDV) or optic techniques like laser Doppler anemometry and particle image velocimetry (PIV) were usually utilized to quantify fluid velocity (10)(11)(12)(13)(14). Therefore, our concept was to develop a novel artificial flow channel, which offers the possibility of transapical access to the left ventricle and toward the thoracic aorta combined with fluid dynamical testing methods.…”
mentioning
confidence: 99%