Reproducibility of localized protein spectra with a 1.5 T whole body nuclear magnetic resonance scanner

The CODEX method was employed for volume selective proton NMR spectroscopy with a whole body imager in order to control the quality of reproduction with phantoms. The spectral resolution and time stability during typical measuring times are almost better than 3.10(-8) and are usually sufficient for the requirements of high resolution in vivo proton spectroscopy.