Tackling Hemodynamic Analysis of the Carotid Artery Using Open-source Software and Computational Fluid Dynamics

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  • Saho Tatsunori
    Program in Health and Welfare, Graduate on School of Comprehensive Scientific Research, Prefectural University of Hiroshima Department of Radiological Technologist, Kokura Memorial Hospital
  • Onishi Hideo
    Program in Health and Welfare, Graduate on School of Comprehensive Scientific Research, Prefectural University of Hiroshima
  • Sugihara Toshihiko
    SystemCRAFT Co., Ltd.
  • Nakamura Yoshitaka
    Department of Radiological Technologist, Kokura Memorial Hospital
  • Yuda Itsuo
    Department of Radiological Technologist, Kokura Memorial Hospital

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Other Title
  • オープンソースソフトウェアを用いた数値流体力学 (Computational Fluid Dynamics: CFD)による頸動脈血流動態解析の試み
  • オープンソース ソフトウェア オ モチイタ スウチ リュウタイ リキガク(Computational Fluid Dynamics: CFD)ニ ヨル ケイドウミャク ケツ リュウドウタイ カイセキ ノ ココロミ

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Abstract

Purpose: The aim of this study was to evaluate the impact of wall share stress (WSS) in the carotid artery using a computed fluid dynamics analysis system and adopting open-source software. Methods: The dependence of element number (computation time and analytical accuracy) were considered with simple vessel models. We evaluated WSS and flow velocity using a carotid artery model that was based on the outcome of simple vessel models. Results: When the number of elements was 105 or more, the flow velocity error of the outlet decreased to 0.5% or below when using simple vessel models. The carotid bifurcation model showed a whirlpool and a decrease in flow velocity in the carotid bulb part. Conclusion: An analysis system was built using open source software. The results from the carotid bifurcation model suggested that hemodynamics contributes to the development of carotid stenosis.

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