Skip to Main content Skip to Navigation
Theses

Vers un outil d'aide à la décision pour le traitement des anévrismes par endochirurgie

Abstract : Abdominal aortic aneurysm is a pathology which needs to be treated by surgery when its diameter reaches 5.5cm, due to high risk of rupture that is often lethal. Endovascular repair consists in deploying a stent-graft inside the aneurysmal sac to exclude it from the blood flow. However, the drawback of this surgery is the relatively important post-operative complication rate at long-term, requiring costly secondary interventions. The origin of these complications is mainly related to mechanics and therefore, they could be prevented thanks to numerical simulation.The objective of this thesis is to elaborate a simulation methodology to deploy in silico stent-grafts in patient-specific aneurysms. The ultimate goal is to provide practioners with a computer aided decision tool to improve their pre-operative planning.A methodology was developed to simulate the deployment of bifurcated stent-grafts, composed of several modules, in patient-specific aortic aneurysms, whatever their geometry. Finite-element analyses were performed on several clinical cases from real patients, some of them which were highly tortuous and complex for practioners to achieve an accurate preoperative planning. The methodology was validated by comparing numerical results with the position of the stents in the post-operative scans.The ability of finite-element analyses to simulate stent-graft deployment in patient-specific aortic aneurysm geometries was proved in this thesis. Simulations have great potential for adapting stent-grafts to each patient and for anticipating possible post-operative complications at the stage of pre-operative planning.
Document type :
Theses
Complete list of metadata

https://tel.archives-ouvertes.fr/tel-01557293
Contributor : Abes Star :  Contact
Submitted on : Thursday, July 6, 2017 - 9:29:08 AM
Last modification on : Friday, October 23, 2020 - 5:04:18 PM
Long-term archiving on: : Tuesday, January 23, 2018 - 10:35:09 PM

File

Perrin-David-diff.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01557293, version 1

Collections

Citation

David Perrin. Vers un outil d'aide à la décision pour le traitement des anévrismes par endochirurgie. Autre. Ecole Nationale Supérieure des Mines de Saint-Etienne, 2015. Français. ⟨NNT : 2015EMSE0807⟩. ⟨tel-01557293⟩

Share

Metrics

Record views

346

Files downloads

202