The application of 23Na double-quantum-filter (DQF) NMR spectroscopy for the study of spinal disc degeneration.
Ooms KJ, Cannella M, Vega AJ, Marcolongo M, Polenova T. The application of 23Na double-quantum-filter (DQF) NMR spectroscopy for the study of spinal disc degeneration. Magn Reson Med. 2008 Aug; 60(2):246-52.