title: Characterization of flow reduction properties in an aneurysm due to a stent.
abstract: We consider a lattice Boltzmann simulation of blood flow in a vessel deformed by the presence of an aneurysm. Modern clinical treatments involve introducing a stent (a tubular mesh of wires) into the cerebral artery in order to reduce the flow inside the aneurysm and favor its spontaneous reabsorption. A crucial question is to design the stent with suitable porosity so as to produce the most effective flow reduction. We propose a stent positioning factor as a characterizing tool for stent pore design in order to describe the flow reduction effect and reveal the several flow reduction mechanisms using this effect.
authors.affiliation: CUI, Department d'Informatique, University of Geneva, 24 rue du General-Dufour, CH-1211 Geneva 4, Switzerland.
authors.forename: Miki
authors.initials: M
authors.lastname: Hirabayashi
authors.forename: Makoto
authors.initials: M
authors.lastname: Ohta
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Rüfenacht
authors.forename: Bastien
authors.initials: B
authors.lastname: Chopard
mesh_terms: D017542:Aneurysm, Ruptured / Q000628:therapy*; D001783:Blood Flow Velocity; D019917:Blood Vessel Prosthesis Implantation; D006801:Humans; D002532:Intracranial Aneurysm / Q000473:pathology / Q000628:therapy*; D008955:Models, Cardiovascular; D008962:Models, Theoretical; D011673:Pulsatile Flow; D015607:Stents; D016896:Treatment Outcome