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Abstract #4185

Comparison of electromagnetic and thermal simulations with measurements of different orthopedic implants system at 1.5T

Keran Wang1, Zainul Ihsan1, Joerg Seehafer1, Thomas Doering1, Wolfgang Goertz1, and Gregor Schaefers1,2

1MR:comp GmbH Service for MR Safety & Compatibility, Gelsenkirchen, Germany, 2MRI-STaR-Magnetic Resonance Institute for Safety,Technology and Research GmbH, Gelsenkirchen, Germany

With aid of the numerical simulations the test of a typical commercial orthopedic implant system composed of huge amount of multi-component implants varying in dimensions or materials is doable in realistic time and cost regarding the radio frequency induced heating. Electromagnetic and thermal simulations are applied to confirm the worst case configuration, locate the hotpot and interpret the temperature rise which is compared with the experiment test. To catch the worst case scenario the placement of the test object should be considered in relation to the local electrical field and the setup of simulation should approach the experimental condition.

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