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. Author manuscript; available in PMC: 2018 Apr 1.
Published in final edited form as: Neuroimage. 2017 Jan 23;149:98–113. doi: 10.1016/j.neuroimage.2017.01.053

Figure 3.

Figure 3

Mean QSM values derived from simulated idealized phase data which has undergone no phase unwrapping (data was not wrapped in this case) and data which has undergone Laplacian-, path-, and voxelwise-unwrapping algorithms. No TE-dependence is seen in the data which underwent no unwrapping. Both Laplacian- and path-unwrapped data show varying degrees of TE-dependence, with path-unwrapped date remaining consistent in early echoes before falling in magnitude as TE increases. Voxelwise-unwrapped data gives TE-independent QSM values which are consistent with the wrap-free data.