Accurate modeling and positioning of a magnetically controlled catheter tip

Document Type

Journal Article

Publication Title

Medical Physics

Publisher

AAPM - American Association of Physicists in Medicine

Faculty

Faculty of Health, Engineering and Science

School

Electron Science Research Institute

RAS ID

24320

Comments

Le, V. N., Nguyen, N. H., Alameh, K., Weerasooriya, R., & Pratten, P. (2016). Accurate modeling and positioning of a magnetically controlled catheter tip. Medical Physics, 43(2), 650-663. Available here.

Abstract

Purpose: This paper represents the initial phase of a proposed operator-friendly semiautomatic method for positioning and directing an intravascular three-magnet tip catheter in the human heart using an electromagnetic system. Methods: A predictive computer algorithm based on a comprehensive mathematical model is developed, which accurately calculates the magnetic field generated by the electromagnet system as well as the magnetic torques and forces exerted on a three-magnet tip catheter, and generates the necessary electromagnet currents for arbitrary displacement and deflection of the catheter tip within a workspace of 128×128×128 mm. Results: We demonstrate the ability of the developed mathematical model to accurately position a three-magnet tip catheter within the 128×128×128mm workspace of a 3D eight-electromagnet system. Conclusions: The ability of the developed mathematical model in predicting the displacement, direction, and deflection of the catheter tip as a function of the electromagnet current values has been verified through experimental results. © 2016 American Association of Physicists in Medicine.

DOI

10.1118/1.4939228

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