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Impact of Catheter Orientation on Cardiac Radiofrequency Ablation

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Statistical Atlases and Computational Models of the Heart. Regular and CMRxRecon Challenge Papers (STACOM 2023)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 14507))

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Abstract

Radiofrequency ablation is a typical treatment for severe cases of cardiac arrhythmias. A catheter, inserted from the patient’s groin, delivers current at frequencies of 450–500 kHz to the arrhythmogenic area, inflicting thermal damage. The electrical current delivered to the tissue depends (among others) on the tip shape and the catheter orientation. A modified Penne’s bioheat equation with an electric source and cooling blood convection is the standard choice for RFA models. The incompressible Navier-Stokes equation describes the interaction of the blood flow and the irrigated saline. The cardiac tissue is a nonlinear orthotropic hyperelastic material and the Hertz-Signorini-Moreau contact boundary conditions model the frictionless interaction of the electrode with the cardiac tissue. In this work, we consider a spherical electrode tip shape and different orientation angles (from perpendicular up to 60\(^{\circ }\) from the vertical position). We perform a virtual ablation for a standard protocol of power 30 W for a duration of 30 s on a simulated porcine cardiac slab. We compare the contact surface of the electrode with the tissue for the different orientations and the characteristics of the generated lesions.

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Acknowledgements

This work has been partially supported by the State of Upper Austria. This research was funded in part by the Austrian Science Fund (FWF) P35374N. For the purpose of Open Access, the author has applied a CC BY public copyright license to any Author Accepted Manuscript (AAM) version arising from this submission.

Author information

Authors and Affiliations

  1. RICAM - Johann Radon Institute for Computational and Applied Mathematics, 4040, Linz, Austria

    Massimiliano Leoni, Argyrios Petras & Luca Gerardo-Giorda

  2. Hospital de la Santa Creu i Sant Pau, 08025, Barcelona, Spain

    Zoraida Moreno Weidmann & Jose M. Guerra

  3. Johannes Kepler University, 4040, Linz, Austria

    Luca Gerardo-Giorda

Authors
  1. Massimiliano Leoni
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  2. Argyrios Petras
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  3. Zoraida Moreno Weidmann
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  4. Jose M. Guerra
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  5. Luca Gerardo-Giorda
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Corresponding author

Correspondence to Argyrios Petras .

Editor information

Editors and Affiliations

  1. Universitat Pompeu Fabra, Barcelona, Spain

    Oscar Camara

  2. King's College London, London, UK

    Esther Puyol-Antón

  3. Inria, Sophia Antipolis, France

    Maxime Sermesant

  4. King's College London, London, UK

    Avan Suinesiaputra

  5. Technische Universiteit Delft, Delft, The Netherlands

    Qian Tao

  6. Fudan University, Shanghai, China

    Chengyan Wang

  7. King's College London, London, UK

    Alistair Young

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Leoni, M., Petras, A., Weidmann, Z.M., Guerra, J.M., Gerardo-Giorda, L. (2024). Impact of Catheter Orientation on Cardiac Radiofrequency Ablation. In: Camara, O., et al. Statistical Atlases and Computational Models of the Heart. Regular and CMRxRecon Challenge Papers. STACOM 2023. Lecture Notes in Computer Science, vol 14507. Springer, Cham. https://doi.org/10.1007/978-3-031-52448-6_15

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  • DOI: https://doi.org/10.1007/978-3-031-52448-6_15

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-52447-9

  • Online ISBN: 978-3-031-52448-6

  • eBook Packages: Computer ScienceComputer Science (R0)

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