Abstract #2501

SNR and B1+ Field Homogeneity of a Koch Fractal Geometry RF Surface Coil for 23Na-MRI

Cameron Nowikow¹, Paul Polak¹, Norman B. Konyer², Natalia Nikolova³, and Michael D. Noseworthy^1,2,3

¹School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada, ²Imaging Research Centre, St. Joseph's Healthcare, Hamilton, ON, Canada, ³Electrical and Computer Engineering, McMaster University, Hamilton, ON, Canada

There is an intrinsic lack of SNR in ²³Na-MRI images compared to that of proton-based MRI. It is possible that RF coil geometry can affect the acquired images' SNR. This abstract is an investigation into the B₁⁺ field characteristics of a Koch snowflake fractal RF surface coil to see if the produced field is more homogeneous than that of a standard circular surface coil which could lead to higher SNR in the resultant ²³Na images. It was found that the circular geometry produced a more homogeneous field, along with higher SNR than the fractal coil.

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