MR Spectroscopy Quality and Resolution

While the 'H protons bound to the H2O molecule provide basically the whole signal used for MR imaging, the high water signal is one of the most disrupting elements in MRS, since the molecules of interest are found at much lower concentrations, yielding signal amplitudes more than 1,000-fold smaller than the signal of water (Fig. 6.2). Thus the quality of a spectrum, which is usually measured as SNR, and its resolution, which includes the spectral, spatial and temporal dimensions, play a major role in the applicability and acceptance of MR spectroscopy.

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