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Abstract #4165

Approach to reduce the measurement volume to determine spatial distribution of power deposition around a straight lead according to ISO/TS 10974

Finya Ketelsen1,2, Jakob Kreutner3, Gregor Schaefers1,3, and Kevin Kröninger2
1MR:comp GmbH, Testing Services for MR Safety & Compatibility, Gelsenkirchen, Germany, 2TU Dortmund University, Dortmund, Germany, 3MRI-STaR - Magnetic Resonance Institute for Safety, Technology and Research GmbH, Gelsenkirchen, Germany

To determine the RF-induced heating of an active implant, it is necessary to measure the 3D distribution of the power deposition in the hotspot volume. By measuring the Erms distribution around a test object, different influences on the decay were investigated. It was shows that radial decay can be described with a single model along test object. This model is normalized to a defined distance. The measurement values along the TO at this distance, can be used to scale the model and the power deposition inside the hotspot volume can be calculated. This leads to an advantage in time saving.

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