Towards Tracking of Deep Brain Stimulation Electrodes Using an Integrated Magnetometer
Thomas Quirin,
Corentin Féry,
Dorian Vogel,
Céline Vergne,
Mathieu Sarracanie,
Najat Salameh,
Morgan Madec,
Simone Hemm,
Luc Hébrard,
Joris Pascal
Affiliations
Thomas Quirin
Institute for Medical Engineering and Medical Informatics, School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), 4132 Muttenz, Switzerland
Corentin Féry
Institute for Medical Engineering and Medical Informatics, School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), 4132 Muttenz, Switzerland
Dorian Vogel
Institute for Medical Engineering and Medical Informatics, School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), 4132 Muttenz, Switzerland
Céline Vergne
Institute for Medical Engineering and Medical Informatics, School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), 4132 Muttenz, Switzerland
Mathieu Sarracanie
Center for Adaptable MRI Technology, Department of Biomedical Engineering, University of Basel, 4123 Allschwil, Switzerland
Najat Salameh
Center for Adaptable MRI Technology, Department of Biomedical Engineering, University of Basel, 4123 Allschwil, Switzerland
Morgan Madec
Icube laboratory, UMR 7357 (University of Strasbourg/CNRS), 67412 Illkirch, France
Simone Hemm
Institute for Medical Engineering and Medical Informatics, School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), 4132 Muttenz, Switzerland
Luc Hébrard
Icube laboratory, UMR 7357 (University of Strasbourg/CNRS), 67412 Illkirch, France
Joris Pascal
Institute for Medical Engineering and Medical Informatics, School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), 4132 Muttenz, Switzerland
This paper presents a tracking system using magnetometers, possibly integrable in a deep brain stimulation (DBS) electrode. DBS is a treatment for movement disorders where the position of the implant is of prime importance. Positioning challenges during the surgery could be addressed thanks to a magnetic tracking. The system proposed in this paper, complementary to existing procedures, has been designed to bridge preoperative clinical imaging with DBS surgery, allowing the surgeon to increase his/her control on the implantation trajectory. Here the magnetic source required for tracking consists of three coils, and is experimentally mapped. This mapping has been performed with an in-house three-dimensional magnetic camera. The system demonstrates how magnetometers integrated directly at the tip of a DBS electrode, might improve treatment by monitoring the position during and after the surgery. The three-dimensional operation without line of sight has been demonstrated using a reference obtained with magnetic resonance imaging (MRI) of a simplified brain model. We observed experimentally a mean absolute error of 1.35 mm and an Euclidean error of 3.07 mm. Several areas of improvement to target errors below 1 mm are also discussed.
