Effect of coil surface area on the hemodynamics of a patient-specific intracranial aneurysm: A computational study

Author

Aguilar, M.L. ; Morales, H.G. ; Larrabide, I. ; Macho, J.M. ; Roman, L.S. ; Frangi, Alejandro F.

Author_Institution

Center for Comput. Imaging & Simulation Technol. in Biomed. (CISTIB), Univ. Pompeu Fabra (UPF), Barcelona, Spain

fYear

2012

fDate

2-5 May 2012

Firstpage

1180

Lastpage

1183

Abstract

The purpose of this work is to evaluate the influence of coil diameters on the hemodynamics of intracranial aneurysms by using computational fluid dynamic (CFD) simulations. Three virtual treatments were performed varying packing density and coil surface area, by changing coil diameter. Hemodynamic parameters such as wall shear stress (WSS), average velocity and dye concentration at the aneurysm site were qualitative and quantitatively analyzed. Simulations with same coil area (958 mm²) but different packing density (21.0% and 41.6%) show similar hemodynamic alterations. Besides, the treated model with the highest coil area (1596 mm²) and intermediate packing density (33.2%) exhibited the highest reduction in the studied hemodynamic variables. Our findings show that coil area plays an important role in the resistance (pressure and frictional drags) of blood flow through the coils.

Keywords

computational fluid dynamics; drag; haemodynamics; medical computing; medical disorders; patient treatment; CFD simulations; blood flow frictional drag; blood flow pressure; coil diameter effects; coil surface area effects; computational fluid dynamic simulations; dye concentration; haemodynamic velocity; intracranial aneurysm hemodynamics; packing density; patient specific intracranial aneurysm; size 1596 mm; size 958 mm; wall shear stress; Aneurysm; Biomedical imaging; Coils; Computational fluid dynamics; Computational modeling; Hemodynamics; Surface treatment; CFD; coil surface area; endovascular coiling; hemodynamics; intracranial aneurysms;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Imaging (ISBI), 2012 9th IEEE International Symposium on

Conference_Location

Barcelona

ISSN

1945-7928

Print_ISBN

978-1-4577-1857-1

Type

conf

DOI

10.1109/ISBI.2012.6235771

Filename

6235771