Numerical analysis of low-frequency electromagnetic field effects from three-phase transformer on coronary stents and cardiac tissues.
Research
RF Safe Research Library
Jan 1, 2026
This engineering simulation modeled power-frequency EMF exposure for simulated patients with magnesium alloy coronary stents near a 200 kVA three-phase transformer. The highest exposure was predicted directly beneath the transformer, but cardiac tissue induced fields were reported to remain below ICNIRP public…
Numerical analysis of the thermal effects on adult with brain pacemaker implantation exposed to WIFI antennas
Research
RF Safe Research Library
Jan 1, 2025
This numerical study modeled RF exposure from WiFi/5G-type antennas near a 3D brain model with implanted brain pacemakers relevant to Parkinson’s disease. SAR and temperature increases were reported to remain below ICNIRP 2020 limits across modeled conditions, with maxima at a 90° antenna-to-brain angle. Despite…
Evaluation of magnetic resonance safety of veterinary radiofrequency identification devices at 1 T.
Research
RF Safe Research Library
Jan 1, 2011
This study evaluated MRI safety parameters for three commercial veterinary RFID microchips at 1 T, assessing movement forces, heating, artifacts, and device function. Translation and torque were reported to be larger than expected from normal activity, but no significant heating was observed and microchip function…
Radiofrequency dosimetry in subjects implanted with metallic straight wires: a numerical study.
Research
RF Safe Research Library
Jan 1, 2008
This numerical FDTD study modeled RF exposure at 900 and 1800 MHz in tissue containing thin metallic straight wire implants. The model indicates that the wire can substantially increase local SAR, creating high SAR gradients. Despite this, the authors report that exposures below current safe levels resulted in…
Dependence of RF heating on SAR and implant position in a 1.5T MR system.
Research
RF Safe Research Library
Jan 1, 2007
This phantom study measured RF-induced heating of a stainless steel humerus implant during 1.5T MR imaging while varying SAR, implant angle to B0, and implant position in the RF coil. Temperature rise at implant tips increased linearly with SAR, with larger rises when the implant was parallel to B0. Heating decreased…