Paul Glover1, Clemente Cobos Sanchez, Henry Power, Richard Bowtell
1School of Physics and Astronomy, University of Nottingham, Nottingham, Notts, UK
There is currently great interest in knowing the electric fields and current densities induced in the human body due to movement in and around MRI scanners. Regulations have been published which describe action thresholds in terms of parameters which are not directly accessible to measurement or routine dosimetry. Hence there is a great reliance on numerical simulations. Here we show that when body rotations are simulated it is vital that the driving electric field is calculated from the vector product of velocity and magnetic field rather than using the rate of change of vector potential.
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