Apports et limitations de la vélocimétrie par résonance magnétique en biomécanique. Mesures dans un embranchement plan symétrique

Thiriet, Maurice; Cybulski, Gerard; Darrow, Robert D.; Doorly, D. J.; Dumoulin, Coralie; Tarnawski, M.; Caro, C.G.

doi:10.1051/jp3:1997154

Cited by 6 publications

(1 citation statement)

References 5 publications

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“…When the lumen size is large enough, the distribution of the three velocity components in the Cartesian frame associated with the scanner can be assessed (e.g. [23]). However, the mid-size arteries, which are often sites of aneurisms, are too small with respect to scanner spatial resolution.…”

Section: Discussionmentioning

confidence: 99%

Medical image – based computational model of pulsatile flow in saccular aneurisms

Salmon

Thiriet

Gerbeau³

2003

ESAIM: M2AN

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Abstract. Saccular aneurisms, swelling of a blood vessel, are investigated in order (i) to estimate the development risk of the wall lesion, before and after intravascular treatment, assuming that the pressure is the major factor, and (ii) to better plan medical interventions. Numerical simulations, using the finite element method, are performed in three-dimensional aneurisms. Computational meshes are derived from medical imaging data to take into account both between-subject and within-subject anatomical variability of the diseased vessel segment. The 3D reconstruction is associated with a faceted surface. A geometrical model is then obtained to be finally meshed for a finite element use. The pulsatile flow of incompressible Newtonian blood is illustrated by numerical simulations carried out in two saccular aneurism types, a side-and a terminal-aneurism. High pressure zones are observed in the aneurism cavity, especially in the terminal one.Mathematics Subject Classification. 68U05, 68U10, 76D05, 35Q30, 65N30.

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Section: Discussionmentioning

confidence: 99%