Folio, David and Dahmen, Christian and Ferreira, Antoine and Fatikow, Sergej


The propulsion of ferromagnetic objects by means of MRI gradients is a promising approach to enable new forms of therapy. In this work, necessary techniques are presented to make this approach work. This includes path planning algorithms working on MRI data, ferromagnetic artifact imaging and a tracking algorithm which delivers position feedback for the ferromagnetic objects and a propulsion sequence to enable interleaved magnetic propulsion and imaging. Using a dedicated software environment integrating path-planning methods and real-time tracking, a clinical MRI system is adapted to provide this new functionality for controlled interventional targeted therapeutic applications. Through MRI-based sensing analysis, this paper aims to propose a framework to plan a robust pathway to enhance the navigation ability to reach deep locations in human body. The proposed approaches are validated with different experiments.



  title = {MRI-based Dynamic Tracking of an Untethered Ferromagnetic Microcapsule Navigating in Liquid},
  author = {Folio, David and Dahmen, Christian and Ferreira, Antoine and Fatikow, Sergej},
  journal = {International Journal of Optomechatronics},
  year = {2016},
  month = apr,
  number = {2},
  pages = {73--96},
  volume = {10},
  doi = {10.1080/15599612.2016.1166305},
  hal = {01305963},
  keywords = {Microrobotics, MRI-based sensing, navigation, path planning, visual tracking.},
  publisher = {Taylor \& Francis}