A mathematical model on the rupture of intracranial aneurysms

Author

Feng, Yixiang ; Meng, Hui

Author_Institution

Dept. of Mech. & Aerosp. Eng., State Univ. of New York, Buffalo, NY, USA

Volume

2

fYear

2002

fDate

2002

Firstpage

1335

Abstract

We constructed and discussed a mathematical model on the rupture of intracranial aneurysms using the concept of daughter aneurysm, a bleb growing out of the weaker part of the aneurysm wall. The rupture risk was found to be a function of the geometry of the daughter aneurysm as well as the radius of the main aneurysm. Our model is in good agreement with the simulation by Steiger (1990). It was suggested that rupture occurs when the stress of the daughter aneurysm reaches that of the parent aneurysm. We also modeled the dynamic development of the daughter aneurysm for various orifice sizes and showed that rupture index first decreases, followed by continuous increase. Rupture occurs sooner for larger daughter aneurysm orifices.

Keywords

biomechanics; blood vessels; brain; haemodynamics; physiological models; aneurysm wall weaker part; continuous increase; daughter aneurysm; dynamic development; geometry; intracranial aneurysms; larger daughter aneurysm orifices; main aneurysm radius; mathematical model; orifice sizes; parent aneurysm; rupture index decrease; rupture risk; stress; Aerodynamics; Aerospace engineering; Aneurysm; Coils; Geometry; Hemorrhaging; Laplace equations; Mathematical model; Orifices; Tensile stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint

ISSN

1094-687X

Print_ISBN

0-7803-7612-9

Type

conf

DOI

10.1109/IEMBS.2002.1106415

Filename

1106415