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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Magn Reson Med. 2012 Nov 19;70(4):1026–1037. doi: 10.1002/mrm.24540

Figure 2.

Figure 2

(a) Selected training curves for T2 = 100 ms, T1 = + ∞ and B1 ranging from 0.6 to 1.2. Curves were simulated numerically using the SEPG model. An echo spacing of 12.11 ms was used in the simualtions to cover a TE range similar to in vivo data. (b) The distribution of the 2-norms of the approximation error for training curves generated according to the SEPG model using only 6 PCs; (c) The distribution of the % error of the T2 values caused by the approximation error when 6 PCs are used to represent the training decay curves. Note that the 2-norms of the approximation error are all below 0.006 and the % error of the T2 values are all less than 3.5% which indicates that the curves are well represented with only 6 PCs.