Regressive cross-correlation of pressure signals in the region of stenosis: Insights from particle image velocimetry experimentation

Docherty, Paul; Geoghegan, Patrick; Huetter, Larissa; Jermy, Mark; Sellier, Mathieu

doi:10.1016/j.bspc.2016.09.025

Cited by 6 publications

(2 citation statements)

References 39 publications

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“…16 To date, there have been a large number of in-vitro studies of haemodynamics. 2-4, [11][12][13]17,22,40,41 For both in silico and in vitro setups, the reconstruction of patientspecific anatomical models is beneficial. These are often derived from computed tomography (CT) or magnetic resonance images (MRI).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a Desktop 3D Printed Rigid Refractive-Indexed-Matched Flow Phantom for PIV Measurements on Cerebral Aneurysms

Ngoepe

Jermy

et al. 2019

Cardiovasc Eng Tech

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Purpose-Fabrication of a suitable flow model or phantom is critical to the study of biomedical fluid dynamics using optical flow visualization and measurement methods. The main difficulties arise from the optical properties of the model material, accuracy of the geometry and ease of fabrication. Methods-Conventionally an investment casting method has been used, but recently advancements in additive manufacturing techniques such as 3D printing have allowed the flow model to be printed directly with minimal post-processing steps. This study presents results of an investigation into the feasibility of fabrication of such models suitable for particle image velocimetry (PIV) using a common 3D printing Stereolithography process and photopolymer resin. Results-An idealised geometry of a cerebral aneurysm was printed to demonstrate its applicability for PIV experimentation. The material was shown to have a refractive index of 1.51, which can be refractive matched with a mixture of deionised water with ammonium thiocyanate (NH 4 SCN). The images were of a quality that after applying common PIV pre-processing techniques and a PIV cross-correlation algorithm, the results produced were consistent within the aneurysm when compared to previous studies. Conclusions-This study presents an alternative low-cost option for 3D printing of a flow phantom suitable for flow visualization simulations. The use of 3D printed flow phantoms reduces the complexity, time and effort required compared to conventional investment casting methods by removing the necessity of a multi-part process required with investment casting techniques.

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Section: Introductionmentioning

confidence: 99%

Evaluation of a Desktop 3D Printed Rigid Refractive-Indexed-Matched Flow Phantom for PIV Measurements on Cerebral Aneurysms

Ngoepe

Jermy

et al. 2019

Cardiovasc Eng Tech

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View full text Add to dashboard Cite

show abstract

“…However, these studies were typically performed using rigid arterial phantoms. Studies have shown that rigid assumptions in straight phantoms representing arteries demonstrate WSS overestimation of up to 60% in comparison to compliant models [21][22][23][24]. While compliant models of complex geometry are difficult to produce [25], it is imperative they are able to replicate and capture any major elements of haemodynamic behaviour if a model is intended to inform therapy.…”

Section: Fig 1 Danger Zones For Stenosis Formation According To Assem...mentioning

confidence: 99%

In vitro pulsatile flow study in compliant and rigid ascending aorta phantoms by stereo particle image velocimetry

Yazdi

Docherty

Williamson

et al. 2021

Medical Engineering & Physics

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Brief Review on Recent Technology in Particle Image Velocimetry Studies on Hemodynamics in Carotid Artery

Noor

Johari

2021

Human-Centered Technology for a Better Tomorrow

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Regressive cross-correlation of pressure signals in the region of stenosis: Insights from particle image velocimetry experimentation

Cited by 6 publications

References 39 publications

Evaluation of a Desktop 3D Printed Rigid Refractive-Indexed-Matched Flow Phantom for PIV Measurements on Cerebral Aneurysms

Evaluation of a Desktop 3D Printed Rigid Refractive-Indexed-Matched Flow Phantom for PIV Measurements on Cerebral Aneurysms

In vitro pulsatile flow study in compliant and rigid ascending aorta phantoms by stereo particle image velocimetry

Brief Review on Recent Technology in Particle Image Velocimetry Studies on Hemodynamics in Carotid Artery

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