TY - JOUR
T1 - MRI-compatible intensity-modulated force sensor for cardiac catheterization procedures
AU - Polygerinos, Panagiotis
AU - Ataollahi, Asghar
AU - Schaeffter, Tobias
AU - Razavi, Reza
AU - Seneviratne, Lakmal D.
AU - Althoefer, Kaspar
N1 - Funding Information:
Manuscript received August 20, 2010; revised October 27, 2010; accepted November 18, 2010. Date of publication November 29, 2010; date of current version February 18, 2011. The work of P. Polygerinos was supported in part by the Alexander S. Onassis Public Benefit Foundation, Greece. This work was supported by the European Community’s Seventh Framework Programme FP7/2007–2013 under Grant 231640. Asterisk indicates corresponding author. *P. Polygerinos is with the Department of Mechanical Engineering, King’s College London, London, WC2R 2LS, U.K. (e-mail: panagiotis. polygerinos@kcl.ac.uk).
PY - 2011/3
Y1 - 2011/3
N2 - 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 (3 mm) 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.
AB - 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 (3 mm) 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.
KW - Cardiac catheterization
KW - fiber-optic force sensor
KW - force sensor
KW - light intensity modulation
KW - magnetic resonance imaging (MRI)-compatible
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U2 - 10.1109/TBME.2010.2095853
DO - 10.1109/TBME.2010.2095853
M3 - Article
C2 - 21118758
AN - SCOPUS:79952129825
SN - 0018-9294
VL - 58
SP - 721
EP - 726
JO - IEEE Transactions on Biomedical Engineering
JF - IEEE Transactions on Biomedical Engineering
IS - 3 PART 1
ER -