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Figure 2. (a–g) Sections of several single-shot echo-planar imaging (EPI) images of hexane, showing the image shift along the phase encoding (PE) direction associated with a magnetic field disturbance. (d–f) A paramagnetic solution is brought to the vicinity of the test object, and (g) then removed. In the absence of any magnetic field disturbances any measured image shifts are under 0.005 ppm, as shown in (h) for the image associated with CH3. (i) The separation between the CH3 and CH2 images remains constant even when there is movement of a paramagnetic solution in the vicinity of the isocentre.
