Electromagnetic tracking in the clinical environment

Yaniv, Ziv; Wilson, Emmanuel; Lindisch, David; Cleary, Kevin

doi:10.1118/1.3075829

Cited by 144 publications

(127 citation statements)

References 20 publications

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“…EM tracking accuracy can be compromised by magnetic field distortion due to nearby medical diagnostic devices such as CT or MRI scanners [206], or other ferromagnetic objects [141]. Furthermore, additional hardware components of the tracking system, such as the EM field generator, must be placed close to the patients or be attached to them, as in the case of a patient-mounted receiver unit (e.g., CORTRAK R system, CORPAK Medsystems, see Sec.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Tracking in Medicine—A Review of Technology, Validation, and Applications

Franz

Haidegger

Birkfellner

et al. 2014

IEEE Trans. Med. Imaging

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382

273

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Abstract-Object tracking is a key enabling technology in the context of computer-assisted medical interventions. Allowing the continuous localization of medical instruments and patient anatomy, it is a prerequisite for providing instrument guidance to subsurface anatomical structures. The only widely used technique that enables real-time tracking of small objects without lineof-sight restrictions is electromagnetic (EM) tracking. While EM tracking has been the subject of many research efforts, clinical applications have been slow to emerge. The aim of this review paper is therefore to provide insight into the future potential and limitations of EM tracking for medical use. We describe the basic working principles of EM tracking systems, list the main sources of error, and summarize the published studies on tracking accuracy, precision and robustness along with the corresponding validation protocols proposed. State-of-the-art approaches to error compensation are also reviewed in depth. Finally, an overview of the clinical applications addressed with EM tracking is given. Throughout the paper, we report not only on scientific progress, but also provide a review on commercial systems. Given the continuous debate on the applicability of EM tracking in medicine, this paper provides a timely overview of the state-of-the-art in the field.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Tracking in Medicine—A Review of Technology, Validation, and Applications

Franz

Haidegger

Birkfellner

et al. 2014

IEEE Trans. Med. Imaging

Self Cite

382

273

View full text Add to dashboard Cite

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“…The infrared temperature sensor was placed in the 10cm above the test site [5,6]. Firstly, the hyperthermia instrument was set to a lower temperature.…”

Section: Experimental Methodsmentioning

confidence: 99%

Skin Temperature Modeling and System Controller Design Under Infrared Physiotherapy Apparatus

Liang¹,

Shang²,

Feng³

2017

dtetr

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Abstract.Objective: To establish the mathematical model of human skin temperature changes under the infrared physiotherapy apparatus. To design the fuzzy PID controller based on the mathematical model.Method: The skin of the back was irradiated by an infrared physiotherapy apparatus. The skin temperature data from an initial steady state to a new steady state was measured, recorded and analyzed. With the MATLAB software's help, mathematical models of human skin temperature changes under infrared irradiation were established using the curve fitting method. Fuzzy PID controller was designed with METLAB Fuzzy Logic and Simulink toolbox based on the mathematical model.Result and Conclusion: The mathematical model of human body irradiated by infrared physiotherapy apparatus is second-order plants with time delay. Under the control of fuzzy PID controller, the system is more stable and more secure.

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“…Such errors can be particularly prevalent in clinical environments and their sources difficult to control. Therefore, it is challenging to predict the accuracy of an EM tracking system based on measurements from a different environment [21].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Electromagnetic Tracking Accuracy for Endoscopic Ultrasound

Bonmati

Gurusamy

et al. 2017

Computer-Assisted and Robotic Endoscopy

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Endoscopic ultrasound (EUS) is a minimally-invasive imaging technique that can be technically difficult to perform due to the small field of view and uncertainty in the endoscope position. Electromagnetic (EM) tracking is emerging as an important technology in guiding endoscopic interventions and for training in endotherapy by providing information on endoscope location by fusion with pre-operative images. However, the accuracy of EM tracking could be compromised by the endoscopic ultrasound transducer. In this work, we quantify the precision and accuracy of EM tracking sensors inserted into the working channel of a flexible endoscope, with the ultrasound transducer turned on and off. The EUS device was found to have little (no significant) effect on static tracking accuracy although jitter increased significantly. A significant change in the measured distance between sensors arranged in a fixed geometry was found during a dynamic acquisition. In conclusion, EM tracking accuracy was not found to be significantly affected by the flexible endoscope.

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Electromagnetic tracking in the clinical environment

Cited by 144 publications

References 20 publications

Electromagnetic Tracking in Medicine—A Review of Technology, Validation, and Applications

Electromagnetic Tracking in Medicine—A Review of Technology, Validation, and Applications

Skin Temperature Modeling and System Controller Design Under Infrared Physiotherapy Apparatus

Assessment of Electromagnetic Tracking Accuracy for Endoscopic Ultrasound

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