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Technical Brief

Assessment of the Accuracy of Optical Shape Sensing for Needle Tracking Interventions

[+] Author and Article Information
Koushik Kanti Mandal

MedICAL Laboratory, Department of Computer and Software Engineering, Polytechnique Montréal, Montréal, QC, H3T 1J4, Canada
koushik-kanti.mandal@polymtl.ca

Francois Parent

APCL Laboratory, Department of Engineering Physics, Polytechnique Montréal, Montréal, QC, H3T 1J4, Canada
francoisparent87@gmail.com

Raman Kashyap

APCL Laboratory, Department of Electrical Engineering and Engineering Physics, Polytechnique Montréal, Montréal, QC, H3T 1J4, Canada
raman.kashyap@polymtl.ca

Sylvain Martel

NanoRobotics Laboratory, Department of Computer and Software Engineering, Polytechnique Montréal, Montréal, QC, H3T 1J4, Canada
sylvain.martel@polymtl.ca

Samuel Kadoury

MedICAL Laboratory, Department of Computer and Software Engineering and the Institute of Biomedical Engineering, Polytechnique Montréal, Montréal, QC, H3T 1J4, Canada
samuel.kadoury@polymtl.ca

1Corresponding author.

ASME doi:10.1115/1.4036338 History: Received August 25, 2016; Revised February 19, 2017

Abstract

Objectives: Accurate needle guidance is essential for a number of MRI-guided percutaneous procedures, such as radiofrequency ablation (RFA) of metastatic liver tumors. A promising technology to obtain real-time tracking of the shape and tip of a needle is by using high frequency (up to 20 kHz) fiber Bragg grating (FBG) sensors embedded in optical fibers, which are insensitive to external magnetic fields. Methods: We fabricated an MR-compatible needle designed for percutaneous procedures with a series of FBG sensors which would be tracked in an image-guidance system, allowing to display the needle shape within a navigation image. Results: A series of phantom experiments demonstrated needle tip tracking errors of 1.05 ± 0.08 mm for a needle deflection up to 16.82 mm on a ground-truth model and shown nearly similar accuracy to electromagnetic tracking (i.e. 0.89 ± 0.09 mm). Conclusion: We demonstrated feasibility of the FBG-based tracking system for MR guided interventions with differences under 1 mm between tracking systems. Significance: This study establishes the needle tracking accuracy of FBG needle tracking for image-guided procedures.

Copyright (c) 2017 by ASME
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