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. Author manuscript; available in PMC: 2022 Mar 1.
Published in final edited form as: Magn Reson Med. 2020 Sep 24;85(3):1294–1307. doi: 10.1002/mrm.28505

Figure 5.

Figure 5.

Distortion correction results in a representative volunteer following correction with a static voxel shift map (VSM) and with VSMs obtained from FIDnav and DOCMA field measurements for changing Y-shim (A) and nose touching (B). The brain boundary extracted from T2 FSE (shown on the right for comparison) is overlaid on each corrected image. Arrows denote regions with residual unwarping errors, observed with both static and DOCMA correction. FIDnavs enable reliable geometric distortion correction for both shim changes and nose touching.