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. Author manuscript; available in PMC: 2010 Oct 20.
Published in final edited form as: J Magn Reson Imaging. 2010 Sep;32(3):654–662. doi: 10.1002/jmri.22258

Figure 2.

Figure 2

Assessment of coil correction of water peak areas from a uniform phantom using Q-Q plots of the distribution of the phantom water peak areas as compared to a normal distribution. Data is from the voxels having more than 90% of maximum excitation (within the PRESS selected region and not under the VSS sat bands). a: Before correction. b: After correction. There is clearly variability in the acquired data that is not all normal in distribution. Once corrected, the MRSI data is more uniform, with the non-normal effects mostly eliminated, as demonstrated by the Q-Q plot better linear fit of the data to a normal distribution (R2 = 0.99 vs. 0.89).