A dedicated RF coil design for phosphorus MRS in the occipital lobe

The dedicated RF coil for phosphorus magnetic resonance spectrum (³¹P MRS) was designed as a double-channel transceiver integrated surface coil structure. It features a semi-curved "pillow" shape, specifically tailored to capture phosphorus magnetic resonance spectroscopy signals in the occipital lobe of the human brain at high magnetic field strength (3T). Through RF magnetic simulation and bench tests, it has been demonstrated that the two channels of the coil exhibit excellent resonance and matching properties at the 3T ³¹P NMR frequency. Additionally, the mutual perpendicular RF magnetic field configuration ensures that the coupling between the channels is negligible. When conducting ³¹P MRS scans with a phosphorus phantom, it was observed that the spectral lines displayed a smooth baseline, prominent peaks, and an exceptional signal-to-noise ratio (SNR) after 2-3 calibrations. These results indicate the efficacy of the coil in capturing high- quality ³¹P MRS signals, offering valuable insights into the metabolic activity within the occipital lobe.