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. Author manuscript; available in PMC: 2009 Dec 30.
Published in final edited form as: Neuroimage. 2009 May 27;47(4):1506–1513. doi: 10.1016/j.neuroimage.2009.05.045

Fig. 1.

Fig. 1

The baseline percentage volume correction (X-axis) against the corresponding repeat image percentage volume correction (Y-axis), calculated using the phantom correction procedure. Any points that lie off the y = x line represent where the phantom correction differed between baseline and follow-up—which should indicate the presence of a scaling change on the scanner between the two MRI exams.