Improved assessment of radiofrequency electromagnetic field power deposition near orthopaedic device using a bone-inclusive ASTM phantom under 1.5T and 3T MRI.
Research
RF Safe Research Library
Jan 1, 2024
This engineering/simulation study proposes a bone-inclusive ASTM phantom to improve assessment of RF power deposition near orthopaedic implants during 1.5 T and 3 T MRI. Using numerical simulations across multiple implant families, the authors report better correlation of peak 1 g SAR near implants with anatomically…
Assessing the effect of selenium on cyclin D1 level and nuclear factor kappa b activity in NIH/3T3 fibroblast cells at 2100 MHz electromagnetic field exposure.
Research
RF Safe Research Library
Jan 1, 2023
This in vitro study examined NIH/3T3 fibroblast cells exposed to 2100 MHz EMF and evaluated cell viability, cyclin D1, and NF-κB activity, with and without 200 nM selenium. The abstract reports reduced cell viability and increased cyclin D1 and NF-κB activity after EMF exposure. Selenium supplementation was reported…
Vitamin C and Vitamin E Protected B and Balb/c-3T3 Cells from Apoptosis Induced by Intermittent 50Hz ELF-EMF Radiation.
Research
RF Safe Research Library
Jan 1, 2017
This in vitro study exposed B cells and Balb/c-3T3 cells to intermittent 50 Hz power-line ELF-EMF and assessed apoptosis. The authors report that preincubation with vitamin C or vitamin E reduced apoptosis compared with the exposed group. They conclude that vitamins C and E have protective effects, with stronger…
Ultrafast volumetric B1 (+) mapping for improved radiofrequency shimming in 3 tesla body MRI.
Research
RF Safe Research Library
Jan 1, 2014
This engineering/clinical MRI methods study evaluated ultrafast volumetric DREAM B1+ mapping to refine patient-adaptive RF shimming at 3T. In 20 patients and three volunteers, a multi-slice adaptive RF shimming approach reduced flip-angle deviations and improved B1+ homogeneity compared with central-slice-based…