1. Erwin L. Hahn Institute for Magnetic Resonance Imaging; University Duisburg-Essen; Essen Germany
2. MR:comp GmbH, MR Safety Testing Laboratory; Gelsenkirchen Germany
3. Division of Medical Physics in Radiology (E020); German Cancer Research Center (DKFZ); Heidelberg Germany
4. Department of Neurosurgery; University Hospital Essen; Essen Germany
5. High Field and Hybrid MR Imaging; University Hospital Essen; Essen Germany
6. MRI-STaR-Magnetic Resonance Institute for Safety, Technology and Research GmbH; Gelsenkirchen Germany
7. Faculty of Electrical Engineering and Information Technology; FH Aachen-University of Applied Sciences; Aachen NRW Germany