Skip to Main content Skip to Navigation
Theses

La localisation spatiale d'outils chirurgicaux par systèmes électromagnétiques alternatifs. Applications et domaines de validité des modélisations numériques

Abstract : Magnetic tracking devices are the only systems that allow movement tracking of surgical tools inside the human body. Nevertheless, when used in a typical working environnement, these systems are usually disturbed by electromagnetic fields induced in nearby metals. The presence of metallic objects within the working field results in measurement errors which can be important, several millimeters for the most significant. Three-dimensional finite element modelling is presented which is performed with FluxExpert software. This model is used to study the effects of the two metal-related phenomena that impacts the performance of electromagnetic based trackers : eddy currents in conductors and ferromagnetism. Two numerical techniques have been developed. Various controles and particularly an experimental investigation were undertaken to validate the numerical results. Precision and validity domains of the numerical modellings have also been determined
Complete list of metadatas

Cited literature [17 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00006125
Contributor : Joffrey Paille <>
Submitted on : Wednesday, May 19, 2004 - 11:14:59 AM
Last modification on : Thursday, June 11, 2020 - 5:04:05 PM
Long-term archiving on: : Wednesday, November 23, 2016 - 4:30:18 PM

Identifiers

  • HAL Id : tel-00006125, version 1

Collections

UJF | CEA | DRT | LETI | CEA-GRE

Citation

Joffrey Paille. La localisation spatiale d'outils chirurgicaux par systèmes électromagnétiques alternatifs. Applications et domaines de validité des modélisations numériques. Autre [q-bio.OT]. Université Joseph-Fourier - Grenoble I, 2004. Français. ⟨tel-00006125⟩

Share

Metrics

Record views

407

Files downloads

1035