Pascal, Joris

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Pascal
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Joris
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Pascal, Joris

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2022 - 20245
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Gerade angezeigt 1 - 5 von 5
  • Vorschaubild nicht verfügbar
    Publikation
    Tracking of a magnetically navigated millirobot with a magnetic-field camera
    (IEEE, 10.04.2024) Vergne, Céline; Pinto Inácio, José Miguel; Quirin, Thomas; Sargent, David; Madec, Morgan; Pascal, Joris [in: IEEE Sensors Journal]
    A significant progress has been made in the development of magnetic micromanipulation for minimally invasive surgery. The development of systems to localize millimeter-sized robots during magnetic manipulation without line-of-sight detection remains, however, a challenging task. In this study, we focused on the development of a tracking system aiming to fill this gap. A robot, which consists of a cylindrical magnet of 1-mm diameter, is localized using a 2-D array of 3-D magnetoresistive sensors. The system, also called magnetic-field camera (MFC), provides tracking of the robot with a refresh rate of 2 Hz. The developed tracking algorithm reaches a mean absolute error (MAE) for the position and the orientation of, respectively, 0.56 mm and 5.13° in 2-D. This system can be added to the existing magnetic manipulation systems (MMSs) allowing closed-loop control of the navigation. The performances of the MFC are not affected by an exposure to strong magnetic fields. Exposures up to 3 T have been validated. Increasing the integrability of the MFC into MMSs. The presented tracking system makes it possible to target applications, such as minimally invasive eye surgery or drug delivery. The high spatial and magnetic resolutions allow the tracking of magnetic particles, down to 200- μm diameter, when placed close to the surface. The system could also be suitable for the localization of small objects for 2-D biomanipulation.
    01A - Beitrag in wissenschaftlicher Zeitschrift
  • Vorschaubild nicht verfügbar
    Publikation
    Low-field electromagnetic tracking using 3-D magnetometer for assisted surgery
    (IEEE, 02/2023) Vergne, Céline; Féry, Corentin; Quirin, Thomas; Nicolas, Hugo; Madec, Morgan; Hemm-Ode, Simone; Pascal, Joris [in: IEEE Transactions on Magnetics]
    01A - Beitrag in wissenschaftlicher Zeitschrift
  • Vorschaubild nicht verfügbar
    Publikation
    Experimental assessment of the performances of an anisotropic magnetoresistive sensor after exposure to strong magnetic fields
    (IEEE, 2023) Vergne, Céline; Nicolas, Hugo; Madec, Morgan; Hemm-Ode, Simone; Guzman, Raphael; Pascal, Joris [in: 2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers)]
    On-chip magnetometers are already integrated within long-term implants such as cardiac implantable electronic devices. They are also good candidates to be integrated within the next generations of brain stimulation electrodes to provide their position and orientation. In all cases, long-term implants are expected to be at least certified as MRI conditional. We investigated the resilience to the exposure to 3 T and 7 T of an anisotropic magnetoresistive sensor integrating a set/reset function. The sensitivity, non-linearity, and offset of a batch of 63 identical sensors were not affected by the exposure. These preliminary results provide new insights on the usability of magnetoresistive sensors for biomedical applications requiring MRI conditionality.
    04B - Beitrag Konferenzschrift
  • Vorschaubild nicht verfügbar
    Publikation
    Assessment of the impact of static field inhomogeneity on the performance of miniaturized NMR devices
    (IEEE, 2023) Baumgarten, Guilherme; Madec, Morgan; Nguyen, Duc-Vinh; Werling, Lucas; Pascal, Joris; Gajendramurthy, Chunchesh Malangi; Bertani, Philippe; Djukic, Jean-Pierre; Hebrard, Luc [in: IEEE Transactions on Magnetics]
    01A - Beitrag in wissenschaftlicher Zeitschrift
  • Vorschaubild nicht verfügbar
    Publikation
    A magnetic camera to assess the risk of magnetic interaction between portable electronics and cardiac implantable electronic devices
    (IEEE, 06/2022) Quirin, Thomas; Vergne, Céline; Féry, Corentin; Badertscher, Patrick; Nicolas, Hugo; Mannhart, Diego; Osswald, Stefan; Kuhne, Michael; Sticherling, Christian; Madec, Morgan; Hébrard, Luc; Knecht, Sven; Pascal, Joris [in: IEEE International Symposium on Medical Measurements and Applications (MeMeA)]
    04B - Beitrag Konferenzschrift