Impact of Matching Capacitors in SAR Evaluation for a 7T Endo-Rectal Coil

The matching network is significant, yet sometimes overlooked, component of MRI RF Coils. The matching network can have an impact on the local SAR values, especially when 1): the simulated coils are designed for use inside the subject/patient body 2): the tissues near the matching network are already exposed to high SAR values without the inclusion of the matching network. A case study of an endo-rectal coil for 7T prostate imaging with numerical tool showed that the matching network has large impact on the local SAR and is not negligible for MRI RF coils specified above.

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