Fig 1.
Example of T1w MPRAGE images in sagittal and axial plane with (A and C) and without (B and D) distortion correction. The distortion effects were most prominent in the central region but difficult to detect visually (E and F).
Fig 2.
Exemplary overlay of the cortical segmentations from the FreeSurfer parcellations of the distortion corrected (DC) (blue) and not distortion corrected (nDC) (red) images in axial, coronal, and sagittal view.
Purple areas indicate the overlap between the two parcellations.
Table 1.
Mean values, standard deviations (in parentheses), and 95% confidence intervals for volume and thickness for each cortical ROI.
Fig 3.
Mean differences of thickness for each ROI between nDC and DC data.
The ROIs (y axis) are sorted by their mean percentage differences. The dot indicates the mean, and the error bars indicate the 95% confidence interval.
Fig 4.
Mean differences of volume for each ROI between nDC and DC data.
The ROIs (y axis) are sorted by their mean percentage differences. The dot indicates the mean and the error bars indicate the 95% confidence interval.
Fig 5.
Bar graph displaying the concordance correlation coefficients between DC and nDC data for each cortical ROI.
Table 2.
Results of the multiple linear regression analysis.