On the Consequences of Wrapping Patients with RF Shielding Materials

Paul R. Harvey¹, Johan S. van Den Brink¹

Electromagnetic field simulations have been used to evaluate the effect on SAR and RF power demand during normal RF exposure, using the system body coil, for a human body model partially wrapped with a carbon (graphite) sleeve intended to shield parts of the body against the applied RF field. The presence of an RF absorbing/shielding sleeve creates an additional load inside the body coil which causes re-distribution of the E-field and requires increased input power together resulting in elevated global and local SAR.