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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: Magn Reson Med. 2012 Apr 3;69(2):346–359. doi: 10.1002/mrm.24256

Fig. 4.

Fig. 4

Phantom Images reconstructed via FFT (Cartesian) or NUFFT (radial). Top row: Images generated without field map correction. White arrows indicate a region of signal loss due to off-resonance caused by the presence of air bubbles in a series of cylindrical vials of water. Middle row: Images generated with time-segmented field map correction. The signal lost due to off-resonance effects is recovered. Bottom row: zoomed ROI from the top row, demonstrating the resolution provided. The rows of “dots” from bottom to top are squares of 2 mm, 1 mm, 0.75 mm and 0.5 mm per side, respectively.