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Kheradvar, Arash; Kasalko, Jeff; Johnson, Derrick; Gharib, Morteza; ASAIO Journal: 52, Issue 1; 34-38; 2006.
Other Products Cited: Flow Visualization
Visit SourceArash Kheradvar and Morteza Gharib; Annals of Biomedical Engineering: 35, Issue 12; 2050-2064; 2007.
Several studies have suggested that the mitral annulus displacement and velocity in early diastole can be used as indicators of diastolic performance.
Other Products Cited: Flow Visualization
Visit SourceKheradvar, Arash; Milano, Michele; Gharib, Morteza; ASAIO Journal: 53, Issue 1; 8-16; 2007.
Other Products Cited: Flow Visualization
Visit SourceJulia Mascherbauer, Christina Fuchs, Martin Stoiber, Heinrich Schima, Elisabeth Pernicka, Gerald Maurer and Helmut Baumgartner; European Heart Journal: 29, Issue 16; 2049-2057; 2008.
Hypertension is a frequent finding in patients with aortic stenosis (AS). However, controversial data about the influence of systemic blood pressure on the quantification of AS have been published.
Other Products Cited: Ultrasound Measurements
Visit SourceA. A. Sakhaeimanesh; Journal of Medical Engineering & Technology: 32, Issue 6; 434 – 439; 2008.
Other Products Cited: Flow Visualization
Visit SourceMazur, Daniel E.; Osterholzer, Kathryn R.; Toomasian, John M.; Merz, Scott I.; ASAIO Journal: 54, Issue 5; 523-528; 2008.
Other Products Cited: VAD Testing
Visit SourceArash Kheradvar and Morteza Gharib; Annals of Biomedical Engineering: 37, Issue 1; 2009.
In the field of cardiology, the current ability to accurately detect diastolic dysfunction is unsatisfactory due to the lack of an effective diagnostic index. Isolated indexes obtained from echocardiography are all restricted to a certain aspect of ventricular diastolic function only, and individually cannot be regarded...
Other Products Cited: Heart Valve Testing
Visit SourceMathias Vermeulen, Cedric Van Holsbeke, Tom Claessens, Jan W. De Backer, Peter Van Ransbeeck, Pascal Verdonck, 15th Int Symp on Applications of Laser Techniques to Fluid Mechanics Lisbon, Portugal, 05-08 July, 2010
ABSTRACT The objective of this study is to analyze the flow pattern trough a patient specific lower airway under multiple breathing conditions. The measured Particle Image Velocimetry (PIV) results are quantitatively and quantitatively compared ...
Other Products Cited: Flow Visualization
Visit SourceMinsuok Kim; Ciprian Ionita; Rekha Tranquebar; Kenneth R. Hoffmann; Dale B. Taulbee; Hui Meng; Stephen Rudin - Proceedings Volume 6143, Medical Imaging 2006: Physiology, Function, and Structure from Medical Images; 61432G (2006) https://doi.org/10.1117/12.651773 Event: Medical Imaging, 2006, San Diego, California, United States
Stenting may provide a new, less invasive therapeutic option for cerebral aneurysms. However, a conventional porous stent may be insufficient in modifying the blood flow for clinical aneurysms. We designed an asymmetric stent consisting of a low porosity patch welded onto a porous stent for an anterior cerebral artery aneurysm of a specific patient geometry to block the strong inflow jet... … 2.5. Angiographic flow visualization The rapid prototype aneurysm model was inserted in a flow loop consisting of a waveform generator, a pump, and a flow meter; the flow was activated by a heart simulating pump (Vivitro Systems Inc., Canada) …
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Visit SourceA Beaulieu, E Foucault, P Braud… - … (MeMeA), 2011 IEEE …, 2011 - ieeexplore.ieee.org
Other Products Cited: Pulsatile Flow Simulation
Visit SourceA Ducci, S Tzamtzis, M Mullen, G Burriesci - 2012 - ltces.dem.ist.utl.pt
Two sets of phase resolved PIV measurements were performed in the Valsalva sinuses of a glass mock aortic root including three polymeric valve leaflets, before and after the implant of a Medtronic CoreValve TAVI device. The experiments were carried out in a hydro-mechanical cardiovascular pulse duplicator system (Vivitro Superpump System SP3891) r...
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Visit SourceMatthias F. Menne; Devesh Amatya; Rob Fraser; Maximilian Kuetting; Ulrich Steinseifer; Gerry Wight - Journal of the American College of Cardiology; Volume 64, Issue 11_S, September 2014
Commercially available in-vitro cardiac simulators offer testing opportunities for transcatheter valve therapies (TVT) as they are able to replicate the physiological flow and pressure accurately.
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Visit SourceA Falahatpisheh, A Kheradvar - European Journal of Mechanics-B/Fluids, 2012 - Elsevier
Abnormality in cardiac fluid dynamics is highly correlated with several heart conditions. This is particularly true in valvular heart diseases and congenital heart defects where changes in flow-field accompany significant variations in chambers’ pressure gradients. Particle Image Velocimetry (PIV) is a convenient technique in assessing cardiac fluid dynamics in vitro...
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Visit SourceB Chaffin, L Mirabella… QScience Proceedings: Vol. 2012, Heart Valve Biology and Tissue Engineering, 64. DOI: 10.5339/qproc.2012.heartvalve.4.64 Published online: 10 Jul 2012
We aim to validate the performance of our fluid structure interaction (FSI) simulations of a bi-leaflet mechanical heart valve in the aortic position., whose motion is driven by the beating left ventricle. We compare in vitro experiments and computations performed on an idealized model of the left ventricle (LV) with a St. Jude Medical Regent heart valve in the aortic position.
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Visit SourceF Kabinejadian, HL Leo, A Danpinid, - World Congress on …, 2013 - Springer
Stenosed carotid artery is responsible for 60% of strokes in the United States and is the third major cause of death. Recently, there is an increasing interest in carotid artery stenting for treatment of cervical carotid artery bifurcation atherosclerotic disease. The ultimate goal of this study is to develop, prototype, test, and optimize a novel design of a covered carotid stent, in order to achieve emboli prevention and...
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Visit SourceM Vermeulen, T Claessens… - Rapid Prototyping …, 2013 - emeraldinsight.com
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.
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Visit SourceNiema M. Pahlevana, Morteza Ghariba, - Journal of Biomechanics Volume 46, Issue 13, 3 September 2013, Pages 2122–2129
An impedance pump – also known as Liebau pump – is a simple valveless pump that operates based on the principles of wave propagation and reflection. It has been shown in embryonic zebrafish that a similar mechanism is responsible for the pumping action in the embryonic heart during the early stages before valve formation...
Other Products Cited: Pulsatile Flow Simulation
Visit SourceTrung B. Le, Daniel R. Troolin, Devesh Amatya*, Ellen K. Longmire, Fotis Sotiropoulos - Annals of biomedical …, 2013 - Springer *ViVitro Labs employee
We carry out high-resolution laboratory experiments and numerical simulations to investigate the dynamics of unsteady vortex formation across the neck of an anatomic in vitro model of an intracranial aneurysm. A transparent acrylic replica of the aneurysm is manufactured and attached to a pulse duplicator system in the laboratory.
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Visit SourceA Siewnicka, K Janiszowski, M Gawlikowski – Mechatronics 2013, 2014 – Springer
Other Products Cited: Pulsatile Flow Simulation
Visit SourceZH Syedain, LA Meier, JM Reimer… – Annals of biomedical …, 2013 – Springer
A novel tissue-engineered heart valve (TEHV) was fabricated from a decellularized tissue tube mounted on a frame with three struts, which upon back-pressure cause the tube to collapse into three coapting "leaflets." The tissue was completely biological, fabricated from ovine fibroblasts dispersed within a fibrin gel,...
Other Products Cited: Tissue Engineering
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