Experimental Setup with a Whole-Body Resonator for Investigating Thresholds of Tissue Damage in Swine Model Exposed at 123 MHz First Measurement Results

Gerhard Brinker¹, Christian Grosse-Siestrup², Chie Hee Cho², Katja Reiter², Katherina Habekost², Peter Wust², Razvan Lazar¹, Franz Hebrank¹, Eckart Stetter¹, Jacek Nadobny²

The SAR limits issued by IEC 60601-2-33 are to some extent unbalanced comparing the whole body SAR limit with the local SAR limit. In order to examine thresholds of tissue damage a measurement setup consisting by the Tx path components of a clinical 3T MR scanner is established. Initial results of RF exposure on dead swine (6.5 W/kg, 30 minutes) are presented. Temperature increments are measured at the hot spot locations both invasively in tissue as well as superficially using infrared camera. The experimental results correspond very well with results of simulation using realistic 3D-voxel model of a swine