Abstract #5276

Workflow and performance measures for integrating magnetic field monitoring with an 8-channel pediatric head coil for 7T MRI

Christian Sprang^1,2, Pedram Yazdanbakhsh^1,3, Marcus Couch⁴, Sajjad Feizollah^1,3, Christine Tardif^1,2,3, and David A Rudko^1,2,3

¹McConnell Brain Imaging Centre, Montreal Neurological Institute and Hospital, Montreal, QC, Canada, ²Department of Biomedical Engineering, McGill University, Montreal, QC, Canada, ³Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada, ⁴Siemens Healthcare Limited, Montreal, QC, Canada

Synopsis

Keywords: System Imperfections: Measurement & Correction, RF Arrays & SystemsUltra-high field MRI is particularly susceptible to dynamic magnetic field fluctuations. To address this, commercial field probes were integrated into an 8-channel dipole Tx/Rx 7 T pediatric head coil. Coil performance was assessed before and after probe integration. Probe performance was compared on and off the coil. After probe integration, reflection coefficients were maintained below -10dB in all channels, noise correlation was shown to improve, and maximum SNR was shown to decrease. Probe performance did not change substantially once mounted on the coil. Future work will aim to address the reduction in SNR observed after probe integration.

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