Abstract #0301

Comparison between experimental and simulated electric fields near a hip implant in a parallel transmit hip coil

Aurelien Destruel¹, Miguel Fuentes^1,2, Ewald Weber¹, Kieran O'Brien^3,4, Markus Barth⁴, Feng Liu¹, and Stuart Crozier¹

¹School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Australia, ²School of Public Health and Preventive Medicine, Population Health Research on Electromagnetic Energy, Monash University, Australia, ³Siemens Healthcare Pty Ltd, Brisbane, Australia, ⁴Centre for Advanced Imaging, The University of Queensland, Brisbane, Australia

The high conductivity of metal implants causes them to focus electric fields in tissue, which may increase the local temperature. In the case of parallel transmit (pTx) MRI, careful simulations of the patient and coil are required to predict heating, but validation of the simulations is challenging near metal implants. In this work, direct measurement of E-field near a hip prosthesis is performed inside a pTx hip coil, and results are compared with simulated data with and without considering decoupling. Neglecting decoupling leads to differences of up to 80% with measured data, showing the importance of realistic simulations.

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