Search Results - "Narracott, Andrew J"

The importance of three dimensional coronary artery reconstruction accuracy when computing virtual fractional flow reserve from invasive angiography by Solanki, Roshni, Gosling, Rebecca, Rammohan, Vignesh, Pederzani, Giulia, Garg, Pankaj, Heppenstall, James, Hose, D. Rodney, Lawford, Patricia V., Narracott, Andrew J., Fenner, John, Gunn, Julian P., Morris, Paul D.

“…Three dimensional (3D) coronary anatomy, reconstructed from coronary angiography (CA), is now being used as the basis to compute ‘virtual’ fractional flow…”
Get full text

Sex differences in coronary microvascular resistance measured by a computational fluid dynamics model by Taylor, Daniel J, Aubiniere-Robb, Louise, Gosling, Rebecca, Newman, Tom, Hose, D Rodney, Halliday, Ian, Lawford, Patricia V, Narracott, Andrew J, Gunn, Julian P, Morris, Paul D

“…Increased coronary microvascular resistance (CMVR) is associated with coronary microvascular dysfunction (CMD). Although CMD is more common in women,…”
Get full text

Modelling The Hemodynamics of Coronary Ischemia by Baraikan, Abdulaziz Al, Czechowicz, Krzysztof, Morris, Paul D, Halliday, Ian, Gosling, Rebecca C, Gunn, Julian P, Narracott, Andrew J, Williams, Gareth, Garg, Pankaj, Malawski, Maciej, Vosse, Frans van de, Lungu, Angela, Rafiroiu, Dan, Hose, David Rodney

“…Acting upon clinical patient data, acquired in the pathway of percutaneous intervention, we deploy hierarchical, multi-stage, data-handling protocols and…”
Get full text

The Use of Digital Coronary Phantoms for the Validation of Arterial Geometry Reconstruction and Computation of Virtual FFR by Pederzani, Giulia, Czechowicz, Krzysztof, Ghorab, Nada, Morris, Paul D., Gunn, Julian P., Narracott, Andrew J., Hose, David Rodney, Halliday, Ian

“…We present computational fluid dynamics (CFD) results of virtual fractional flow reserve (vFFR) calculations, performed on reconstructed arterial geometries…”
Get full text

Uncertainty assessment of imaging techniques for the 3D reconstruction of stent geometry by Cosentino, Daria, Zwierzak, Iwona, Schievano, Silvia, Díaz-Zuccarini, Vanessa, Fenner, John W, Narracott, Andrew J

“…Abstract This paper presents a quantitative assessment of uncertainty for the 3D reconstruction of stents. This study investigates a CP stent (Numed, USA) used…”
Get full text

The Accuracy of 3D Optical Reconstruction and Additive Manufacturing Processes in Reproducing Detailed Subject-Specific Anatomy by Ferraiuoli, Paolo, Taylor, Jonathan, Martin, Emily, Fenner, John, Narracott, Andrew

“…3D reconstruction and 3D printing of subject-specific anatomy is a promising technology for supporting clinicians in the visualisation of disease progression…”
Get full text

A framework for different levels of integration of computational models into web-based virtual patients by Kononowicz, Andrzej A, Narracott, Andrew J, Manini, Simone, Bayley, Martin J, Lawford, Patricia V, McCormack, Keith, Zary, Nabil

“…Virtual patients are increasingly common tools used in health care education to foster learning of clinical reasoning skills. One potential way to expand their…”
Get full text

A novel method for measuring absolute coronary blood flow and microvascular resistance in patients with ischaemic heart disease by Morris, Paul D, Gosling, Rebecca, Zwierzak, Iwona, Evans, Holli, Aubiniere-Robb, Louise, Czechowicz, Krzysztof, Evans, Paul C, Hose, D Rodney, Lawford, Patricia V, Narracott, Andrew J, Gunn, Julian P

“…Abstract Aims Ischaemic heart disease is the reduction of myocardial blood flow, caused by epicardial and/or microvascular disease. Both are common and…”
Get full text

Measurement of in vitro cardiac deformation by means of 3D digital image correlation and ultrasound 2D speckle-tracking echocardiography by Ferraiuoli, Paolo, Fixsen, Louis S., Kappler, Benjamin, Lopata, Richard G.P., Fenner, John W., Narracott, Andrew J.

“…•Combined measurement of cardiac displacement and strain is performed using 3D digital image correlation (3D-DIC) and ultrasound 2D speckle-tracking…”
Get full text

Computational modelling of cardiovascular pathophysiology to risk stratify commercial spaceflight by Morris, Paul D., Anderton, Ryan A., Marshall-Goebel, Karina, Britton, Joseph K., Lee, Stuart M. C., Smith, Nicolas P., van de Vosse, Frans N., Ong, Karen M., Newman, Tom A., Taylor, Daniel J., Chico, Tim, Gunn, Julian P., Narracott, Andrew J., Hose, D. Rod, Halliday, Ian

“…For more than 60 years, humans have travelled into space. Until now, the majority of astronauts have been professional, government agency astronauts selected,…”
Get full text

Evaluation of models of sequestration flow in coronary arteries—Physiology versus anatomy? by Taylor, Daniel J., Saxton, Harry, Halliday, Ian, Newman, Tom, Feher, Jeroen, Gosling, Rebecca, Narracott, Andrew J., van Kemenade, Denise, van’t Veer, Marcel, Tonino, Pim A.L., Rochette, Michel, Hose, D. Rodney, Gunn, Julian P., Morris, Paul D.

“…Myocardial ischaemia results from insufficient coronary blood flow. Computed virtual fractional flow reserve (vFFR) allows quantification of proportional flow…”
Get full text

The role of venous valves in pressure shielding by Zervides, Constantinos, Narracott, Andrew J, Lawford, Patricia V, Hose, David R

“…It is widely accepted that venous valves play an important role in reducing the pressure applied to the veins under dynamic load conditions, such as the act of…”
Get full text

Full-field analysis of epicardial strain in an in vitro porcine heart platform by Ferraiuoli, Paolo, Kappler, Benjamin, van Tuijl, Sjoerd, Stijnen, Marco, de Mol, Bas A J M, Fenner, John W, Narracott, Andrew J

“…The quantitative assessment of cardiac strain is increasingly performed to provide valuable insights on heart function. Currently, the most frequently used…”
Get full text

Measurement of in vitro and in vivo Stent Geometry and Deformation by Means of 3D Imaging and Stereo-Photogrammetry by Zwierzak, Iwona, Cosentino, Daria, Narracott, Andrew J., Bonhoeffer, Philipp, Diaz, Vanessa, Fenner, John W., Schievano, Silvia

“…Purpose To quantify variability of in vitro and in vivo measurement of 3D device geometry using 3D and biplanar imaging. Methods Comparison of stent…”
Get full text

In Vitro Modelling for Bulging Sinus Effects of an Expanded Polytetrafluoroethylene Valved Conduit Based on High-Speed 3D Leaflet Evaluation by Shiraishi, Yasuyuki, Narracott, Andrew J., Yamada, Akihiro, Fukaya, Aoi, Sahara, Genta, Yambe, Tomoyuki, Nagano, Yuka, Yamagishi, Masaaki

“…The study aimed to develop a pulmonary circulatory system capable of high-speed 3D reconstruction of valve leaflets to elucidate the local hemodynamic…”
Get full text

Modeling Approach for An Aortic Dissection with Endovascular Stenting by Shiraishi, Yasuyuki, Yambe, Tomoyuki, Narracott, Andrew J., Yamada, Akihiro, Morita, Ryosuke, Qian, Yi, Hanzawa, Kazuhiko

“…Repair of dissected aorta requires remodeling the structure of the media. Modeling approaches specific to endovascular stenting for aortic dissection have been…”
Get full text

Contribution of Mechanical and Fluid Stresses to the Magnitude of In-stent Restenosis at the Level of Individual Stent Struts by Keller, Brandis K., Amatruda, Claudia M., Hose, D. Rodney, Gunn, Julian, Lawford, Patricia V., Dubini, Gabriele, Migliavacca, Francesco, Narracott, Andrew J.

“…Structural and fluid stresses acting on the artery wall are proposed as mechanical mediators of in-stent restenosis (ISR). This study reports an investigation…”
Get full text

From histology and imaging data to models for in-stent restenosis by Amatruda, Claudia M, Bona Casas, Carles, Keller, Brandis K, Tahir, Hannan, Dubini, Gabriele, Hoekstra, Alfons, Hose, D Rodney, Lawford, Patricia, Migliavacca, Francesco, Narracott, Andrew J, Gunn, Julian

“…The implantation of stents has been used to treat coronary artery stenosis for several decades. Although stenting is successful in restoring the vessel lumen…”
Get full text

Balloon folding affects the symmetry of stent deployment: experimental and computational evidence by Narracott, A.J., Lawford, P.V., Gunn, J.P.G., Hose, D.R.

“…The level of restenosis following coronary artery stenting may be related to the deployed stent geometry. This study investigated the influence of two balloon…”
Get full text

Influence of intermittent compression cuff design on calf deformation: computational results by Narracott, A.J., John, G.W., Hose, D.R., Morris, R.J., Woodcock, J.P., Lawford, P.V.

“…The intermittent compression of the calf with an external pressure cuff for the prevention of deep vein thrombosis (DVT) is a well established treatment for…”
Get full text