Article Figures & Data
Figures
- FIG 1.
Comparison of effect sizes of differences between baseline MUCCA-Jim derived from the participants with longitudinal Day2day distortion-corrected (DD) DD and Day2day non-distortion-corrected (DND), clinical non-distortion-corrected (CND), Day2day distortion-corrected cross-sectional, and clinical non-distortion-corrected cross-sectional (CNDC) MPRAGE scans. Vertical lines beside dot plots indicate SDs around the means.
- FIG 2.
Bland-Altman graph showing larger distortion-corrected MPRAGE-derived MUCCA-Jim values than non-distortion-corrected MPRAGE derived MUCCA-Jim, with relatively normally distributed mean values.
- FIG 3.
Paired t test showing that the mean rescan MUCCA-Jim is quite stable when measured by an experienced rater from real-world non-distortion-corrected MPRAGE scans obtained, on average, 1 year apart.
- FIG 4.
Consecutive sagittal MPRAGE scans. A and B, Large motion artifacts (session 1 MUCCA-Jim = 67.8 mm2, session 2 MUCCA-Jim = 53.1 mm2). C and D, Different head and neck (vertebrae level cutoff) positioning (session 1 MUCCA-Jim = 47.1 mm2, session 2 MUCCA-Jim = 64.3 mm2). E and F, Metal implants in the mouth region (session 1 MUCCA-Jim = 73.8 mm2, session 2 MUCCA-Jim = 79.7 mm2). Inlays show axial MUCCA regions, where the SC does not immediately seem different, but surrounding head/neck regions are often sliced differently. Red outline in images indicates the location of MUCCA segmentation.
Tables
CoVs for each Day2day participant MUCCA-Jim derived from distortion- and non-distortion-corrected MPRAGE scans
Participant No. of Rescan MPRAGE Scans Collected No. of Distortion-Corrected Derived MUCCAs Analyzed CoV for Distortion-Corrected Derived MUCCA No. of Non-Distortion-Corrected Derived MUCCAs Analyzed CoV for Non-Distortion-Corrected Derived MUCCA 1 50 50 1.36 50 1.38 2 13 10 1.89 10 1.72 3 50 37 3.09 43 2.03 4 11 11 1.39 10 1.35 5 45 40 1.40 41 1.33 6 47 36 1.91 42 1.55 7 43 43 1.35 41 1.55 8 49 42 1.55 43 1.40
