Old Research lines

Research lines developed during 2009-2013 in the Universitat Politècnica de Catalunya.

AORTIC FLUID-STRUCTURE INTERACTION

A reconstruction of the abdominal area of the aorta, a generation of abdominal aortic aneurysm and the generation of the different stent grafts studied and their inclusion in diseased aortic aneurysm are done in order to study the behaviour of the fluid-structure interaction system.

a) A Medical Image reconstruction is done from a real aorta to create a 3D solid model to be capable of treating and analyzing in a FEA package.

b) The model, which includes the aneurysm and the stent graft, is analyzed using a Finite Elements Method Package with Computational Fluid Dynamics Analysis and Structural Analysis

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working with: Servei d’angiologia i cirurgia vascular. Centre Hospital Universitari Joan XXIII, Tarragona (Catalonia).

Main Related publications:

Marcé-Nogué, J. [et al.] Inclusion of the permeability in a stent-graft fluid-structure model as a hole-proportion in the surface. “Proceedings of tte Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing”. 2011 (url).

BIOMECHANICAL ORTHODONTICS

Nowadays, the use of oral implants and prostheses for the partial and total treatment has increased significantly as a real alternative to removable dentures.  Finite element analysis has been used in dentistry to investigate a wide range of topics, such as structure of teeth, biomaterials and restorations, dental implants and root canals.

The general purpose of the project is to study and to increase the phenomenological knowledge of oral implants (as temporary micro screws of anchorage or brackets) in order to have empirical and analytical tools that help to make the optimal clinical decision at the moment for coming to an orthodontic intervention. The aim of the project is to  obtain new indicators using FEM that cannot be obtained experimentally and extend the knowledge in the behaviour of new designs that allow a better behaviour of the studied current elements.

working with the Department of Orthodontics of the Universitat International de Catalunya, Sant Cugat (Catalonia).

Main Related publications:

Walter, A. [et al.]. Orthodontic Mini-Implant Design Characteristics, Primary Stability and Risk of Fracture: Pilot Scan Electron Microscope and Mechanical Studies. Medicina oral, patología oral y cirugia bucal. 2013. (url).

Marcé-Nogué, J. [et al.]. Comparison of ten Orthodontic Maxillofacial Micro-Screws with a Finite Element Analysis in different cortical bone parameters.  The International Journal of Oral & Maxillofacial Implants. 2013. (url).

CARDIAC MECHANICS

The classical interpretation of myocardial activation assumes that the myocardium is homogeneous and that the electrical propagation is radial. However, anatomical studies have described a layered anatomical structure resulting from a continuous anatomical helical disposition of the myocardial fibers. To further investigate the sequence of electromechanical propagation based on the helical architecture of the heart, a simplified computational model was designed. This model was then used to test four activation patterns, which were generated by propagating the action potential along the myocardial band from different activation sites.

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This work has been done in collaboration with the Universitat Rovira i Virgili, Universitat de Lleida and Hospital de sant Pau de Barcelona.

Main Related publications:

Marcé-Nogué, J. [et al.] Computational modeling of electromechanical propagation in the helical ventricular anatomy of the heart. Computers in Biology and Medicine. 2013 (url).

Marcé-Nogué, J. Understanding the Electro-Mechanical Activation of the Myocardium. Journal of Basic and Applied Physics. 2012 (url).