a. True. This is due to eddy currents arising in conducting loops. Burns can also occur where the arms and legs are touching, forming a conducting loop pathway.
b. False. The main risk is that of a ferromagnetic object entering the inner MR controlled area becoming a projectile.
c. True. The Lenz effect is an induction of a magnetic field in a moving conductor that opposes the external magnetic field. It is of low significance at a 1.5 T field, but is a potential hazard at higher field strengths.
d. False. This is caused by magnetic field gradients.
e. True. In the first-level controlled mode with appropriate monitoring, the allowable temperature rise is 1°C.