Verification of porous loss model for assessment of flow diverters

Takashi Suzuki, Syo Kadokura, Hiroyuki Takao, Satoshi Tateshima, Shunsuke Masuda, Dahmani Chihebeddine, Yi Qian, Fernando Vinuela, Yuichi Murayama, Makoto Yamamoto

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

    Abstract

    Recently neurointerventional treatments using flow diverters (FDs) have been introduced and increasingly performed. However, complications (non-occluded and ruptured aneurysms after the treatment) have been reported. To assess the effects of FDs to the blood flow, Computational Fluid Dynamics (CFD) have been performed. In the approach using FDs geometries, higher machine specifications are required because of the larger number of computational elements due to the large scale difference between the size of the flow diverter's struts and the aneurysms. As an alternative method, we validate the applicability of the porous model approach for patient-specific CFD. Two patients treated with FDs are analyzed. The results show that, in both cases, inflow rate into the aneurysms, velocity in the aneurysm and wall shear stress at the aneurysm surface are underestimated. However, pressure at the aneurysm surface are in good agreement between both models.

    Original languageEnglish
    Title of host publication11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014
    EditorsEugenio Oñate, Xavier Oliver, Antonio Huerta
    Place of PublicationBarcelona, Spain
    PublisherInternational Center for Numerical Methods in Engineering
    Pages6178-6187
    Number of pages10
    ISBN (Electronic)9788494284472
    Publication statusPublished - 1 Jul 2014
    EventJoint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014 - Barcelona, Spain
    Duration: 20 Jul 201425 Jul 2014

    Other

    OtherJoint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014
    CountrySpain
    CityBarcelona
    Period20/07/1425/07/14

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