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A, Automatic-versus-reference segmentation of the ICV in 19 subjects. The oblique black line represents the equality line. The ICV unit is in milliliters. ICVauto indicates automatic intracranial volume; ICVref, reference intracranial volume. B, Bland-Altman plot of the data in A. The horizontal dashed lines are the 95% confidence intervals of the difference between manual and automatic ICV. ICVauto indicates automatic intracranial volume; ICVref, reference intracranial volume.
