Magnetic resonance fingerprinting thermometry (MRFT) versus PRFS thermometry: comparative temperature prediction in ex vivo bovine muscle

We explored T1-based magnetic resonance fingerprinting thermometry (MRFT) and compared it with proton resonance frequency shift (PRFS) thermometry in ex vivo bovine muscle data. We conducted temperature sensitivity calibration experiments for both methods. We compared MRFT and PRFS thermometry predicted temperatures in bovine muscles, validated by fluoroptic probe measurements. We observed strong correlation in temperature sensitivity calibration experiments (R2>0.958). Both methods predict temperature accurately (RMSE<1.37 ℃ and RMSE<0.93 ℃ for MRFT and PRFS, over a range of 25 ℃). We observed strong correlation between PRFS and MRFT predicted temperature in heated bovine muscle (R2>0.93).