CVE Research Seminar

The CVE Research Seminar is a forum for scientific exchange in the group of Cardiovascular Engineering of the ARTORG Center. The CVE Research Seminar convenes at least once per month (typically on Thursdays at 16:00 in F502 of the ARTORG building at Murtenstrasse 50). There are invited talks by external speakers, discussions of papers (journal club) as well as internal presentations of research projects. The CVE Research Seminar is open to guests.

Next Event

Assessment of Energy Loss in the Ascending Aorta of Patients with Stenosis

Utku Gülan 

14:00-15:00, November 23, 2017

Murtenstrasse 50, 3008 Bern, Floor F, Room F502

 

 

Abstract:

Aortic stenosis is one of the most common heart diseases in the Western world and can lead to ventricular dysfunction, heart failure, and death. Up to now functional assessment and risk assessment is mostly based on measurements of either blood flow velocity or pressure, which rely on several assumptions and are subject to significant uncertainty. In clinical routine, pressure gradients and effective orifice area are used as measures of aortic stenosis severity. A common method is to measure the pressure loss via a catheter. However, this method is invasive and it provides only limited information on stenosis characteristics that is often insufficient e.g. for the planning of clinical intervention. Doppler echocardiography is the standard tool to assess the severity of a stenosis. It has, however, been noted that it is affected by significant uncertainty due to technical and conceptual limitations of Doppler echo, i.e. the assumption of laminar flow with flat velocity profiles at the vena contracta, difficulties in the alignment of Doppler and blood flow intercept angle and the inability of assessing pressure recovery. Therefore, there is a need for establishing alternative non-invasive methods capable of providing more complete and accurate information on stenosis severity. The talk focuses on the ability of a novel method to quantify the severity of a stenosis by assessing energy loss and pressure recovery.

Date/Time Speaker Title Location
23.112017
14:00-15:00
Utku Gülan, Institute of Environmental Engineering, ETH Zürich Assessment of Energy Loss in the Ascending Aorta of Patients with Stenosis Murtenstrasse 50, 3008 Bern, Floor F, Room F502
28.09.2017
16:00-17:00
Dimosthenis Pasadakis, Università della Svizzera Italiana, Lugano  Fluid-Structure Interaction Simulations of the Human Heart Murtenstrasse 50, 3008 Bern, Floor F, Room F502
18.08.2017
13:00-14:00
Ruslan Asfandiyarov, University of Geneva
Application of modern photosensors to medical devices
Murtenstrasse 50, 3008 Bern, Floor F, Room F502
 08.06.2017
16:00-17:00
Lena Wiegmann, University of Zurich
Blood damage in ventricular assist devices Murtenstrasse 50, 3008 Bern, Floor F, Room F502
01.06.2017
15:30-16:30
Dario De Marinis, Politecnico di Bari Fluid-Structure-Interaction Immersed-Boundary Methods for Multiphysics Murtenstrasse 50, 3008 Bern, Floor F, Room F502
1.12.2016
16:00-17:00
Christoph Brücker, City University London  Strömungsforschung an biomedizinischen Fragestellungen: Ein Überblick  Murtenstrasse 50, 3008 Bern, Floor F, Room F502
13.10.2016
16:00-17:00
Timo Koch, Universität Stuttgart  An embedded multidimensional model for flow and transport processes in vascularized biological tissue  Murtenstrasse 50, 3008 Bern, Floor F, Room F502
12.09.2016
17:15-18:00
Marcel Filoche, Ecole Polytechnique, Paris 
Fluid transport and surfactant delivery into the lung airway system 
Inselspital, Polikliniktrakt 2 Kursraum D 517
10.06.2016
16:00-17:00
Marco Castagna, Politecnico di Milano A mock circulation loop for the right heart
Murtenstrasse 50, 3008 Bern, Floor F, Room F502
19.05.2016
16:00-17:00 
Alberto Mantegazza, Politecnico di Milano Finite element computational model for the design of a polymeric tracheal stent implantable in biological prosthesis
Murtenstrasse 50, 3008 Bern, Floor A, Room A008
28.04.2016
15:00-16:00
Gian-Reto Nussbaumer, ARTORG Center, University of Bern Minimally invasive measurement of flow rate and blood pressure in the portal vein with an inflatable cuff Murtenstrasse 50, 3008 Bern, Floor A, Room A008
21.04.2016
16:00-17:00
Lino Widmer, ARTORG Center, University of Bern Blood flow measurement in the cerebral microcirculation with the double-circle method  Murtenstrasse 50, 3008 Bern, Floor F, Room F502
16.04.2015
16:00-17:00          
Thomas Kummer, Institute of Fluid Dynamics, ETH Zürich             Computational Model for Design of Heart Assist Devices Murtenstrasse 50, 3008 Bern, Floor F, Room F502