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Abstract #4416

In Silico and in Vitro Investigation of Temperature Elevation Close to an Aneurysm Clip at 7T

Yacine Noureddine1, 2, Oliver Kraff1, 3, Mark E. Ladd1, 3, Karsten Wrede4, Gregor Schaefers2, Andreas K. Bitz1, 3

1Erwin L.Hahn Institute for MRI, University Duisburg-Essen, Essen, NRW, Germany; 2MR:comp GmbH, MR Safety Testing Laboratory, Gelsenkirchen, NRW, Germany; 3Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, NRW, Germany; 4Clinic for Neurosurgery, University Hospital Essen, Essen, NRW, Germany

For safety assessment of metallic aneurysm clips, RF-induced heating resulting from electric field elevations in the tissue is the major concern with respect to patient safety. In this study, RF and thermal simulations were conducted to determine RF heating around an aneurysm clip at 7T using a simplified model of the head. Validation of the simulations was supported by RF field measurement.