The Effect of a Different Motion Speed on the Induced Current in the Body of Female Nurses Working in the Vicinity of MRI Scanners

Abstract

Medical staff working near magnetic resonance imaging (MRI) scanners are exposed both to the static magnetic field (SMF) itself and also to electric currents that are induced in the body by motion within the SMF. Currently available data on induced electric currents for realistic movements are limited. This study computationally investigates the movement-induced electric fields for realistic movements in the magnetic field of a 1.5 T MRI scanner.

Computation of induced fields by motion at different velocities in SMF at the vicinity of MRI scanners is based on magnetic field measurements for both the motion of the worker and the fringe field of the MRI scanner. The induced fields and the related specific absorption rate are computationally determined using the Matlab script method.

Results shows that SAR values and induced electric currents has a significant correlations with the motion speed with p<0.001