Surgical stent planning: simulation parameter study for models based on DICOM standards.

International Journal of Computer Assisted Radiology and Surgery
S SchererO Burgert

Abstract

Endovascular Aneurysm Repair (EVAR) can be facilitated by a realistic simulation model of stent-vessel-interaction. Therefore, numerical feasibility and integrability in the clinical environment was evaluated. The finite element method was used to determine necessary simulation parameters for stent-vessel-interaction in EVAR. Input variables and result data of the simulation model were examined for their standardization using DICOM supplements. The study identified four essential parameters for the stent-vessel simulation: blood pressure, intima constitution, plaque occurrence and the material properties of vessel and plaque. Output quantities such as radial force of the stent and contact pressure between stent/vessel can help the surgeon to evaluate implant fixation and sealing. The model geometry can be saved with DICOM "Surface Segmentation" objects and the upcoming "Implant Templates" supplement. Simulation results can be stored using the "Structured Report". A standards-based general simulation model for optimizing stent-graft selection may be feasible. At present, there are limitations due to specification of individual vessel material parameters and for simulating the proximal fixation of stent-grafts with hooks. Simulat...Continue Reading

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Citations

Apr 9, 2013·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Adrien KaladjiPascal Haigron
Feb 1, 2013·Journal of Biomechanical Engineering·Shijia ZhaoStacey R Froemming
Oct 31, 2013·International Journal of Computer Assisted Radiology and Surgery·S von SachsenC D Etz
Nov 30, 2012·Biomechanics and Modeling in Mechanobiology·John J Mulvihill, Michael T Walsh
Dec 28, 2012·IEEE Transactions on Bio-medical Engineering·Aurélien DuménilPascal Haigron

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