Gelled vs non-gelled phantom material for measurement of temperature rise by the MRI RF-magnetic field

In this paper we study the magnetic resonance imaging (MRI), eddy currents are induced in the body of the patient by the RF magnetic field. The precession rate of the proton magnetization determines the frequency, which is 64 MHz for 1.5 T static field. The RF-induced currents in the body are concentrated near medical implants, resulting in a localized additional temperature rise.