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. 2015 Apr 23;3:e909. doi: 10.7717/peerj.909

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© 2015 Smith et al.

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.

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The computed R₁ relaxation rate (A), signal enhancement ratio SER (B), maximum CA tissue concentration C_t (C), the Standard Tofts-Kety parameters K^trans (D) and v_e (E), and the fit residual (F). Only voxels with SER >2.0 were fit. Of the 36,864 voxels in the image, only 7,815 were selected for parameter fitting.