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. Author manuscript; available in PMC: 2024 May 1.
Published in final edited form as: NMR Biomed. 2022 Dec 14;36(5):e4867. doi: 10.1002/nbm.4867

Figure 6: Image simulations: Cartesian vs. non-Cartesian.

Figure 6:

Here we show the different off-resonance effects from EPI vs. spiral acquisition. In the EPI image, geometric distortion of the brain is visible with a distortion sensitivity of 75 Hz/cm (see Eq. (9)), a typical value, resulting in the brain being stretched compared to the original Cartesian spin-warp image (blue arrows). In the spiral image, there is a large amount of blurring, noted by the red arrow, but there is less geometric distortion than in EPI.