Time-resolved PIV measurements of the flow field in a stenosed, compliant arterial model

Geoghegan, Patrick; Buchmann, Nicolas; Soria, Julio; Jermy, Mark

doi:10.1007/s00348-013-1528-0

Cited by 33 publications

(39 citation statements)

References 25 publications

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“…Among others, they are of low cost, are easy to handle and have a good luminous efficiency and very small spatial dimensions. First successful applications of LED illumination for PIV investigations are reported by Willert et al (2010) and Geoghegan et al (2012).…”

Section: Light Sheet Opticsmentioning

confidence: 96%

Measurements of the dynamics of thermal plumes in turbulent mixed convection based on combined PIT and PIV

2015

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Section: Light Sheet Opticsmentioning

confidence: 96%

Measurements of the dynamics of thermal plumes in turbulent mixed convection based on combined PIT and PIV

2015

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“…In addition, wall stiffness is a measure of arterial health, and the pulse waveform differs in stiff and compliant arteries [19]. Failing to mimic arterial compliance reduces the precision of the model [20].…”

Section: Introductionmentioning

confidence: 99%

A Novel Fabrication Method for Compliant Silicone Phantoms of Arterial Geometry for Use in Particle Image Velocimetry of Haemodynamics

et al. 2019

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Cardiovascular diseases (CVDs) are one of the leading causes of death globally. In-vitro measurement of blood flow in compliant arterial phantoms can provide better insight into haemodynamic states and therapeutic procedures. However, current fabrication techniques are not capable of producing thin-walled compliant phantoms of complex shapes. This study presents a new approach for the fabrication of compliant phantoms suitable for optical measurement. Two 1.5× scaled models of the ascending aorta, including the brachiocephalic artery (BCA), were fabricated from silicone elastomer Sylgard-184. The initial phantom used the existing state of the art lost core manufacturing technique with simple end supports, an acrylonitrile butadiene styrene (ABS) additive manufactured male mould and Ebalta-milled female mould. The second phantom was produced with the same method but used more rigid end supports and ABS male and female moulds. The wall thickness consistency and quality of resulting stereoscopic particle image velocimetry (SPIV) were used to verify the fidelity of the phantom for optical measurement and investigation of physiological flow fields. However, the initial phantom had a rough surface that obscured SPIV analysis and had a variable wall thickness (range = 0.815 mm). The second phantom provided clear particle images and had a less variable wall thickness (range = 0.317 mm). The manufacturing method developed is suitable for fast and cost-effective fabrication of different compliant arterial phantom geometries.

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“…4) that is connected to a pump system producing a physiologically realistic cardiac flow wave (Geoghegan et al 2013) that includes mimicry of the aortic valve closing. At each end of the model, a silicone end plate connects the phantom to the box.…”

Section: Methodsmentioning

confidence: 99%

“…Having the right compliance (flexibility) in the arterial wall, is one of the challenges that must be overcome to fully mimic the fluid-structure interaction (FSI). Failing to incorporate artery compliance significantly reduces the accuracy of the model (Geoghegan et al 2013) and limits the potential benefit of such studies.…”

Section: Introductionmentioning

confidence: 99%

Application of a meta-analysis of aortic geometry to the generation of a compliant phantom for use in particle image velocimetry experimentation

et al. 2015

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The evolution of pressure-flow geometry in the aortic arch is increasingly understood as a key element in the treatment of hemodynamic dysfunction in patients. However, little is known about the properties of the flow across the aortic geometry and thus the sensitivity of sensor placement is also unknown. Compliant models of the aortic path can be built to allow techniques such as particle image velocimetry to measure the velocity fields. This paper presents the justification and production methodology used to generate a compliant model of the aortic arch that represents the geometry and compliance of typical hemodynamics patients. The information from twenty papers was synthesized to generate a single model of the aortic arch. The model incorporates the three branching arteries at an apex of a tapering aortic path experimental that has been manufactured as a flexible thin-walled silicon model. Calculations were undertaken to ensure that the model matches the in vivo compliance of the arteries.The experimental setup uses the compliant silicone model of the aorta with variable flow pump to mimic the cardiac cycle, and a variable extramural pressure to mimic changes in intrathoracic pressure. This research was necessary for the development of an accurate experimental setup that would enable results that are immediately applicable to the research of cardiovascular therapy optimization.

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Time-resolved PIV measurements of the flow field in a stenosed, compliant arterial model

Cited by 33 publications

References 25 publications

Measurements of the dynamics of thermal plumes in turbulent mixed convection based on combined PIT and PIV

Measurements of the dynamics of thermal plumes in turbulent mixed convection based on combined PIT and PIV

A Novel Fabrication Method for Compliant Silicone Phantoms of Arterial Geometry for Use in Particle Image Velocimetry of Haemodynamics

Application of a meta-analysis of aortic geometry to the generation of a compliant phantom for use in particle image velocimetry experimentation

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