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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: Magn Reson Med. 2017 Jul 7;79(3):1495–1505. doi: 10.1002/mrm.26819

Figure 1.

Figure 1

3D MSI bin images can be analyzed at each z location by constructing matrices with bin profiles mapping to columns. The first principal component corresponds to onresonance signal (93% of the energy) spanned by the bin profile RF0, and the residual off-resonance signal exhibits sparsity.