MRI-Compatible Intensity-Modulated Force Sensor for Cardiac Catheterization Procedures

Panagiotis Polygerinos; Asghar Ataollahi; Tobias Schaeffter; Reza Razavi; Lakmal D. Seneviratne; Kaspar Althoefer

doi:10.1109/TBME.2010.2095853

MRI-Compatible Intensity-Modulated Force Sensor for Cardiac Catheterization Procedures

Panagiotis Polygerinos, Asghar Ataollahi, Tobias Schaeffter, Reza Razavi, Lakmal D. Seneviratne, Kaspar Althoefer

King's College London

Research output: Contribution to journal › Article › peer-review

82 Citations (Scopus)

Abstract

This paper presents a novel, magnetic resonance imaging (MRI)-compatible, force sensor suitable for cardiac catheterization procedures. The miniature, fiber-optic sensor is integrated with the tip of a catheter to allow the detection of interaction forces with the cardiac walls. The optical fiber light intensity is modulated when a force acting at the catheter tip deforms an elastic element, which, in turn, varies the distance between a reflector and the optical fiber. The tip sensor has an external diameter of 9 Fr (3mm) and can be used during cardiac catheterization procedures. The sensor is able to measure forces in the range of 0-0.85 N, with relatively small hysteresis. A nonlinear method for calibration is used and real-time MRI in vivo experiments are carried out, to prove the feasibility of this low-cost sensor, enabling the detection of catheter-tip contact forces under dynamic conditions.

Original language	English
Pages (from-to)	721 - 726
Number of pages	6
Journal	IEEE Transactions on Biomedical Engineering
Volume	58
Issue number	3
DOIs	https://doi.org/10.1109/TBME.2010.2095853
Publication status	Published - Mar 2011

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title = "MRI-Compatible Intensity-Modulated Force Sensor for Cardiac Catheterization Procedures",

abstract = "This paper presents a novel, magnetic resonance imaging (MRI)-compatible, force sensor suitable for cardiac catheterization procedures. The miniature, fiber-optic sensor is integrated with the tip of a catheter to allow the detection of interaction forces with the cardiac walls. The optical fiber light intensity is modulated when a force acting at the catheter tip deforms an elastic element, which, in turn, varies the distance between a reflector and the optical fiber. The tip sensor has an external diameter of 9 Fr (3mm) and can be used during cardiac catheterization procedures. The sensor is able to measure forces in the range of 0-0.85 N, with relatively small hysteresis. A nonlinear method for calibration is used and real-time MRI in vivo experiments are carried out, to prove the feasibility of this low-cost sensor, enabling the detection of catheter-tip contact forces under dynamic conditions.",

author = "Panagiotis Polygerinos and Asghar Ataollahi and Tobias Schaeffter and Reza Razavi and Seneviratne, {Lakmal D.} and Kaspar Althoefer",

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AU - Polygerinos, Panagiotis

AU - Ataollahi, Asghar

AU - Schaeffter, Tobias

AU - Razavi, Reza

AU - Seneviratne, Lakmal D.

AU - Althoefer, Kaspar

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JF - IEEE Transactions on Biomedical Engineering

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MRI-Compatible Intensity-Modulated Force Sensor for Cardiac Catheterization Procedures

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