Characterization of flow reduction properties in an aneurysm due to a stent.
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.
Hirabayashi
Miki
M
CUI, Department d'Informatique, University of Geneva, 24 rue du General-Dufour, CH-1211 Geneva 4, Switzerland.
Ohta
Makoto
M
Rüfenacht
Daniel A
DA
Chopard
Bastien
B
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