Low-rank reconstruction for simultaneous double half-echo ²³Na and undersampled ²³Na multi-quantum coherences MRI

CONCLUSION: The proposed sequence, coupled with low-rank reconstructions, provides an efficient framework for comprehensive whole-brain sodium MRI, combining TSC, T2*, and TQ/SQ ratio estimations. Additionally, low-rank matrix completion enables the reconstruction of highly undersampled ^(23)Na MQC MRI, allowing for accelerated acquisition or enhanced spatial …