Effectiveness of safe working procedure on SMF exposure levels and work performances in 3 T MRI system operations

Occupational exposure to the static magnetic field (SMF) is an arising problem in operators of magnetic resonance imaging (MRI) system. It has been well established that human body movements in the stray field from MRI system induces the electric current inside the body and this magnetically induced current causes the temporal sensational changes such as vertigo, headache, nausea and metallic taste etc... to MR workers [1]. Although the self-motivated motion control is recommended for MR workers to prevent these temporal effects [1], more feasible safe working procedure is required to achieve the compliance monitoring. The present study performed the trial of the safe working procedure among 3 T MRI system users and investigated its effectiveness in occupational SMF exposure levels and their work performances.