Pitfalls of electromagnetic tracking in clinical routine using multiple or adjacent sensors

Background While electromagnetic tracking (EMT) holds great promise, there are substantiated concerns about interference within the clinical environment. The purpose of this study was to address accuracy and isolate pitfalls for using multiple or adjacent EMT sensors in clinical routine. Methods A p...

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Bibliographic Details
Published in:The international journal of medical robotics + computer assisted surgery 2013-09, Vol.9 (3), p.268-273
Main Authors: Wegner, Ingmar, Teber, Dogu, Hadaschik, Boris, Pahernik, Sascha, Hohenfellner, Markus, Meinzer, Hans-Peter, Huber, Johannes
Format: Article
Language:English
Subjects:
Accuracy
accuracy analysis
Computer simulation
Electromagnetic Phenomena
electromagnetic tracking
Humans
Image intensifiers
Image Processing, Computer-Assisted
Image-Guided Biopsy - adverse effects
Image-Guided Biopsy - instrumentation
Image-Guided Biopsy - methods
Imaging, Three-Dimensional
Interference
Kidney - pathology
navigation
Phantoms, Imaging
Routines
Sensors
Software
Surgery, Computer-Assisted - adverse effects
Surgery, Computer-Assisted - instrumentation
Surgery, Computer-Assisted - methods
Tables (data)
Tracking
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Summary:Background While electromagnetic tracking (EMT) holds great promise, there are substantiated concerns about interference within the clinical environment. The purpose of this study was to address accuracy and isolate pitfalls for using multiple or adjacent EMT sensors in clinical routine. Methods A phantom simulating an EMT‐guided puncture of the kidney was used to analyse the effects of multiple sensors in the direct vicinity, common clinical environments and the influence of endo‐urological instruments. Results No relevant interference due to the investigated instruments was discovered. However, there was a great decrease in accuracy in the vicinity of a C‐arm's image intensifier, especially affecting the precision of two adjacent sensors. Conclusion Endo‐urological instruments can be safely used for multi‐sensor EMT‐guided procedures. When avoiding the immediate proximity of the surgical table and the image intensifier, there is a comfortable accuracy corridor. Thus, EMT‐assistance is promising for a wide range of procedures if basic conditions are met. Copyright © 2012 John Wiley & Sons, Ltd.
ISSN:1478-5951
1478-596X
DOI:10.1002/rcs.1431