Abstract #4167

SAR Safety Analysis for a 8Tx/16Rx Coil Array Prototype for Human Cardiac MRI at 7 T

Maxim Terekhov¹, Ibrahim A. Elabyad¹, Carsten Kögler², Theresa Reiter^1,3, and Laura M. Schreiber¹

¹Chair of Cellular and Molecular Imaging, Comprehensive Heart Failure Center (CHFC), University Hospital Würzburg, Wuerzburg, Germany, ²Rapid Biomedical, Rimpar, Germany, ³Department of Internal Medicine l, University Hospital Wuerzburg, Wuerzburg, Germany

The purpose of this study was to simulate the variation of SAR caused by shifting the position of a cardiac array prototype when different B1-shimming phase vectors are employed. The variation of 10g average SAR distribution due to displacing the anterior array position on the thorax (central, shifted 5 cm to the right, left, head, foot and diagonal directions) was computed and analyzed using two human voxel models. The final goal is to determine maximal driving voltage of the array with adequate safety margins considering new hot-spots originated from possible array misplacement

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