Congratulations to Guillaume Paillart, who defended his PhD thesis on July 6, 2026! His work, conducted at the IADI laboratory, focused on “Electromagnetic Simulation for the Study of MRI Compatibility of Medical Devices.” Electromagnetic simulation is a valuable tool for assessing tissue heating induced by the radiofrequency field during an MRI examination. In particular, in the presence of implanted medical devices, such as cerebral or cardiac stimulators, it allows for the estimation of localized heating at the interface between the device’s conductive components and the patient’s tissues. However, validating these complex methods poses a major challenge. In this thesis, a methodology was proposed to quantitatively evaluate such a simulation approach by comparing simulation results with in vivo magnetic field measurements (complex B1+ field maps). A key finding of this work is that using an electrical conductivity value measured in vivo by MRI in the brain—using techniques developed in the ELECTRA project—reduces the discrepancy between simulations and experimental measurements, compared to using standard values based on ex vivo measurements.
Share this content: