Mitral Valve Leakage Quantification by Means of Experimental and Numerical Flow Modeling

Vermeulen, Mathias; Smissen, Benjamin Van Der; Claessens, Tom; Kaminsky, Rado; Segers, Patrick; Verdonck, Pascal; Ransbeeck, Peter Van

doi:10.2478/v10147-011-0016-x

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…In this case the kernel can be produced with CNC milling or rapid prototyping and after casting and curing silicone or a multicomponent resin, the kernel can be removed from the model by force. This kernel can be reused many times (Vermeulen et al , 2010).…”

Section: Introductionmentioning

confidence: 99%

Manufacturing of patient‐specific optically accessible airway models by fused deposition modeling

Vermeulen

Claessens

Smissen

et al. 2013

Rapid Prototyping Journal

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Purpose -The purpose of this paper is to use rapid prototyping technology, in this case fused deposition modeling (FDM), to manufacture 2D and 3D particle image velocimetry (PIV) compatible patient-specific airway models. Design/methodology/approach -This research has been performed through a case study where patient-specific airway geometry was used to manufacture a PIV compatible model. The sacrificial kernel of the airways was printed in waterworkse which is a support material used by Stratasys Maxum FDM devices. Transparent silicone with known refractive index was vacuum casted around the kernel and after curing out, the kernel was removed by washing out in sodium hydroxide. Findings -The resulting PIV model was tested in an experimental PIV setup to check the PIV compatibility. The results showed that the model performs quite well when the refractive index (RI) of the silicone and the fluid are matched. Research limitations/implications -Drawbacks such as the surface roughness, due to the size of the printing layers, and the yellowing of the silicone, due to the wash out of the kernel, need to be overcome. Originality/value -The paper presents the manufacturing process for making complex thick walled patient-specific PIV models starting from a strong workable sacrificial kernel. This removable kernel is obtained by switching the building and the support materials of the FDM machine. In this way, the kernel was printed in support material while the building material was used to support the kernel during printing. The model was tested in a PIV setup and the results show that the airway model is suitable for performing particle image velocimetry.

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Section: Introductionmentioning

confidence: 99%

Manufacturing of patient‐specific optically accessible airway models by fused deposition modeling

Vermeulen

Claessens

Smissen

et al. 2013

Rapid Prototyping Journal

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“…Lately necuron was used in different industrial applications and research such as airplane wing tesing in wind tunnels or in bioengineering research for heart valve damage [10] [11].…”

Section: Introductionmentioning

confidence: 99%

Nondestructive Evaluation of Polyurethane Materials Using Transient Thermography

Amarandei

Berdich

Szigyarto

et al. 2012

KEM

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The aim of this work is to investigate the potential of transient thermography in the nondestructive evaluation of structural defects of NECURON 1001 using the FLIR thermographic system. Necuron is a polyurethane material used for applications like: fixture and gauges, master and copy models, models with high mechanical stress, etc. Transient thermography is a thermographic method which implies the investigation of materials that are of a different (often higher) temperature than the ambient. The heat flow into the sample is altered in the presence of a subsurface defect or feature, creating a temperature contrast at the surface that is recorded by the infrared system. Results show that this method of evaluation can indicate, in necuron, defects of small sizes that can be overlooked in the manufacturing process. Also, it was shown that the transient thermography method presented can be an important tool in evaluating structural defects of materials.

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“…The velocity changing trend is generally consistent with all MR conditions including some vortices evident in the center of ventricle. Vermenlen[29] reported the range of jet velocities between 2.6 m/s to 4 m/s during mitral valve leakage. However, Lassila…”

mentioning

confidence: 99%

Fluid-structure interaction assessment of blood flow hemodynamics and leaflet stress during mitral regurgitation

Esfahani

Hassani

Espino

2018

Computer Methods in Biomechanics and Biomedical Engineering

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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Mitral Valve Leakage Quantification by Means of Experimental and Numerical Flow Modeling

Cited by 3 publications

References 8 publications

Manufacturing of patient‐specific optically accessible airway models by fused deposition modeling

Manufacturing of patient‐specific optically accessible airway models by fused deposition modeling

Nondestructive Evaluation of Polyurethane Materials Using Transient Thermography

Fluid-structure interaction assessment of blood flow hemodynamics and leaflet stress during mitral regurgitation

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