title: Finite-element-based matching of pre- and intraoperative data for image-guided endovascular aneurysm repair.
abstract: Endovascular repair of abdominal aortic aneurysms is a well-established technique throughout the medical and surgical communities. Although increasingly indicated, this technique does have some limitations. Because intervention is commonly performed under fluoroscopic control, 2-D visualization of the aneurysm requires the injection of a contrast agent. The projective nature of this imaging modality inevitably leads to topographic errors, and does not give information on arterial wall quality at the time of deployment. A specially adapted intraoperative navigation interface could increase deployment accuracy and reveal such information, which preoperative 3-D imaging might otherwise provide. One difficulty is the precise matching of preoperative data (images and models) and intraoperative observations affected by anatomical deformations due to tool-tissue interactions. Our proposed solution involves a finite-element-based preoperative simulation of tool-tissue interactions, its adaptive tuning regarding patient specific data, and the matching with intraoperative data. The biomechanical model was first tuned on a group of ten patients and assessed on a second group of eight patients.
authors.affiliation: LTSI-INSERM U1099, Université de Rennes 1, Rennes F-35000, France. aurelien.dumenil@gmail.com
authors.forename: Aurélien
authors.initials: A
authors.lastname: Duménil
authors.forename: Adrien
authors.initials: A
authors.lastname: Kaladji
authors.forename: Miguel
authors.initials: M
authors.lastname: Castro
authors.forename: Simon
authors.initials: S
authors.lastname: Esneault
authors.forename: Antoine
authors.initials: A
authors.lastname: Lucas
authors.forename: Michel
authors.initials: M
authors.lastname: Rochette
authors.forename: Cemil
authors.initials: C
authors.lastname: Göksu
authors.forename: Pascal
authors.initials: P
authors.lastname: Haigron
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography; D001012:Aorta, Abdominal / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D019917:Blood Vessel Prosthesis Implantation; D003198:Computer Simulation; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008875:Middle Aged; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed