Numerical simulation of patient-specific endovascular stenting and coiling for intracranial aneurysm surgical planning

Journal of Translational Medicine
Xiaochang LengJianping Xiang

Abstract

In this study, we develop reliable and practical virtual coiling and stenting methods for intracranial aneurysm surgical planning. Since the purpose of deploying coils and stents is to provide device geometries for subsequent accurate post-treatment computational fluid dynamics analysis, we do not need to accurately capture all the details such as the stress and force distribution for the devices and vessel walls. Our philosophy for developing these methods is to balance accuracy and practicality. We consider the mechanical properties of the devices and recapitulate the clinical practice using a finite element method (FEM) approach. At the same time, we apply some simplifications for FEM modeling to make our methods efficient. For the virtual coiling, the coils are modeled as 3D Euler-Bernoulli beam elements, which is computationally efficient and provides good geometry representation. During the stent deployment process, the stent-catheter system is transformed according to the centerline of the parent vessel since the final configuration of the stent is not dependent of the deployment history. The aneurysm and vessel walls are assumed to be rigid and are fully constrained during the simulation. All stent-catheter system and c...Continue Reading

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Citations

Aug 25, 2020·Interventional Neuroradiology : Journal of Peritherapeutic Neuroradiology, Surgical Procedures and Related Neurosciences·Zhongbin TianJian Liu
Dec 18, 2020·Frontiers in Neurology·Hailin WanXiaolong Zhang
Mar 2, 2021·Interventional Neuroradiology : Journal of Peritherapeutic Neuroradiology, Surgical Procedures and Related Neurosciences·Xiaochang LengJianping Xiang
Mar 11, 2021·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Mark C AllenbyDavid Alonso-Caneiro

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Software Mentioned

SolidWorks
HiFiVS
Abaqus
Geomagic
Explicit
MATLAB

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