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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Neuroimage. 2011 Apr 22;57(1):225–234. doi: 10.1016/j.neuroimage.2011.04.026

Figure 2.

Figure 2

The locations of ROIs in each sample (a and d) and the plots of R2* values over the angles in each ROI (b, and c for Sample 1; e and f for Sample 2. The fitted lines (dashed red for the isotropic susceptibility model; dotted blue for the anisotropic susceptibility model) clearly show that the isotropic model has poor fit whereas the anisotropic model tightly follows the measurement. The R2* values are the highest when the fiber orientation is perpendicular to B0 field whereas the value becomes low when it is parallel to B0 field.