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Erschienen in: International Journal of Computer Assisted Radiology and Surgery 4/2014

01.07.2014 | Original Article

Stent graft visualization and planning tool for endovascular surgery using finite element analysis

Erschienen in: International Journal of Computer Assisted Radiology and Surgery | Ausgabe 4/2014

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Abstract

Purpose

A new approach to optimize stent graft selection for endovascular aortic repair is the use of finite element analysis. Once the finite element model is created and solved, a software module is needed to view the simulation results in the clinical work environment. A new tool for interpretation of simulation results, named Medical Postprocessor, that enables comparison of different stent graft configurations and products was designed, implemented and tested.

Methods

 Aortic endovascular stent graft ring forces and sealing states in the vessel landing zone of three different configurations were provided in a surgical planning software using the Medical Imaging Interaction Tool Kit (MITK) software system. For data interpretation, software modules for 2D and 3D presentations were implemented. Ten surgeons evaluated the software features of the Medical Postprocessor. These surgeons performed usability tests and answered questionnaires based on their experience with the system.

Results

The Medical Postprocessor visualization system enabled vascular surgeons to determine the configuration with the highest overall fixation force in \(16 \pm 6\) s, best proximal sealing in \(56 \pm 24\) s and highest proximal fixation force in \(38\pm 12\) s. The majority considered the multiformat data provided helpful and found the Medical Postprocessor to be an efficient decision support system for stent graft selection. The evaluation of the user interface results in an ISONORM-conform user interface (113.5 points).

Conclusion

The Medical Postprocessor visualization software tool for analyzing stent graft properties was evaluated by vascular surgeons. The results show that the software can assist the interpretation of simulation results to optimize stent graft configuration and sizing.
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Metadaten
Titel
Stent graft visualization and planning tool for endovascular surgery using finite element analysis
Publikationsdatum
01.07.2014
Erschienen in
International Journal of Computer Assisted Radiology and Surgery / Ausgabe 4/2014
Print ISSN: 1861-6410
Elektronische ISSN: 1861-6429
DOI
https://doi.org/10.1007/s11548-013-0943-2

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