University of Pennsylvania Health System

University of Pennsylvania Health System

Vitatech was commissioned by the University of Pennsylvania Health Systems Campus to design AC ELF and DC EMI magnetic shielding systems for Magnetic Resonance Imaging (MRIs) and the Proton Gantry Center. The first stage of this project included an EMI/RFI site survey and simulations of the entire hospital campus to evaluate the external impacts on clinical and research instrumentation. Proximity to a major loading dock, the Pennsylvania transit system, an outdoor substation, a Proton facility, as well as the buildings internal electrical systems were analysed during this project to determine the appropriate mitigation. Additionally, MRIs located above the Proton Gantry and the buildings main loading dock required an integrated mitigation solution.

Vitatech recommended a Gantry DC mitigation system to minimize the DC interference with the MRIs located above the Proton Gantry and to minimize mutual interference between the moving vehicles below and the fringe MRI fields. AC ELF shielding was then required to minimize the impact on adjacent offices and nearby EMI sensitive instrumentation. Finally, Vitatech recommended a DC fringe magnetic shielding system at the loading dock to minimize the impact from moving trucks below the 3T MRIs and to contain the 5 Gauss lines from entering the loading dock area.

Posted in: Healthcare Mitigation