POSSIBILITIES OF IMPROVEMENT OF METROLOGICAL AND USABLE PROPERTIES OF AN ELECTROMAGNETIC NAVIGATION SYSTEM WITH AC EXCITED FIELD |
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| M. Baszynski, Z. Moron, N. Tewel |
- Abstract:
- One of the methods of medical navigation, applied for positioning of instruments inside the patient's body during investigation or surgery, is electromagnetic one. The great advantage of this method is a possibility of positioning inside the patient's body. Its shortcomings are: sensitivity to the presence of objects disturbing the magnetic field distribution, i.e. conducting and ferromagnetic objects in the operating space and a relatively small area of high accuracy measurement. The works presented in this paper are aimed to prevent or limit these disadvantages. The improved accuracy of measurement can be achieved thanks to the introduction of an additional reference channel and performance of numeric simulations enabling optimal choice of the system of magnetic field generation. The disturbing influence of conducting and ferromagnetic objects on the system accuracy have been simulated using the finite element method (FEM). Some methods of limiting these disturbances have been proposed on the basis of the results obtained.
- Keywords:
- electromagnetic navigation system, medical navigation, positioning
- Download:
- IMEKO-WC-2012-TC13-O2.pdf
- DOI:
- -
- Event details
- Event name:
- XX IMEKO World Congress
- Title:
Metrology for Green Growth
- Place:
- Busan, REPUBLIC of KOREA
- Time:
- 09 September 2012 - 12 September 2012