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Flow chart of echo‐planar imaging (EPI) image distortion replication. The distortion correction processes shown in Fig. 1 were reversely applied to the undistorted T1‐weighted (T1w) image to create cortical surfaces. (a) Both B0 distortion and gradient distortion, (b) B0 distortion only, and (c) gradient distortion only are replicated. Abbreviations are the same as in Figure 1.
