Jan Paka1, David O. Brunner2, Juerg Froehlich1, Klaas P. Pruessmann2
1Laboratory for Electromagnetic Fields and Microwave Electronics, ETH Zurich, Zurich, Switzerland; 2Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
Waveguide theory was used to analyze a travelling wave multiple channel setup. This allowed us to reduce the size of the numerical domain and increase the model resolution, allowing a more precise estimation of the EM fields. The SAR was calculated in the worst case, under the condition that 1W is dissipated in the human body. MR images based on the derived power limit were acquired, with the travelling wave multiple channel system in transceive mode.