Abstract #4168

Optimisation and validation of numerical simulation methods for parallel-transmit MRI near a hip implant at 7T

Aurelien Destruel¹, Ewald Weber¹, Kieran O'Brien², Feng Liu¹, Markus Barth³, and Stuart Crozier¹

¹School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Australia, ²Siemens Healthcare Pty Ltd, Brisbane, Australia, ³Centre for Advanced Imaging, The University of Queensland, Brisbane, Australia

Electromagnetic simulations are commonly used at 7T to predict and limit RF heating when pTx techniques are used. Correction of simulation results based on measured B₁-maps and MR thermometry data have been shown to improve the simulation results, but may be affected by the presence of metal implants. In this work, B₁-mapping and direct measurement of E-fields are used to validate simulation results of a pTx hip coil in the presence of a hip implant in a phantom. B₁-data and/or E-field data were used and compared to correct simulation results.

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