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Abstract #4169

A simulation study of the SAR10g dependence  of a microwave applicator for MR-guided ablation of hepatic tumors at 1.5T

Tom Dijkhuis1,2, Pim Hendriks2, Mark Burgmans2, Andrew Webb2, and Irena Zivkovic2
1Technical University of Delft, Delft, Netherlands, 2Radiology Department, Leiden University Medical Center, Leiden, Netherlands

Magnetic resonance (MR) guidance of microwave ablation of hepatic tumors could help to overcome poor visualisation of the ablation zone by ultrasound, may allow better intraprocedural confirmation of technical success. The ablation applicator is a metallic rod and can potentially act as an ‘antenna’ during MR imaging which can produce unwanted localized heating in nearby tissue. In this abstract, we investigated via electromagnetic simulations the maximum SAR10g changes caused by applicators of different radius and length and for various insertion angles.

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