A low-field portable MR-based sensor was fabricated for the acquisition of clinical T2 relaxometry measurements in skeletal muscle. We have previously reported methods for designing low-field permanent magnet array configurations with varying sensitive region profiles. The newly constructed array has a sensitive region 15-20mm from the surface of the magnet; field maps from the constructed magnet show good alignment with simulated fields. The exclusion of subcutaneous fat tissue in the sensitive region will improve sensitivity to fluid shifts within the skeletal muscle.
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