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. Author manuscript; available in PMC: 2024 Mar 8.
Published in final edited form as: Mult Scler. 2024 Jan 27;30(2):166–176. doi: 10.1177/13524585231224681

Table 2.

PRL and non-rim WM lesion spatial distribution and comparisons

Lesion type/total WM lesion Lesion type in a band/Lesion type in all the bands
MS RRMS SPMS  RR vs SPMS p-value MS RRMS SPMS RR vs SPMS p-value Band/tot ratio Band/tot ratio PRL vs non-rim, p-value
PRL Count, mean (SD) 3.9 (6.5) 2.6 (2.9) 7.7 (11.6) 0.066 0.087 (0.079) 0.092 (0.081) 0.072 (0.073) 0.280 - -
 Tot volume (mm3), mean (SD) 1092 (2474) 772 (1593) 2074 (4089) 0.157 0.220 (0.216) 0.237 (0.223) 0.165 (0.187) 0.221 - -
Periventricular volume (mm3), mean (SD) 803 (1969) 535 (1002) 1624 (3526) 0.180 0.158 (0.192) 0.170 (0.200) 0.121 (0.167) 0.541 0.67 (0.34) 0.021
Paraventricular volume (mm3), mean (SD) 207 (554) 164 (543) 336 (585) 0.219 0.038 (0.055) 0.040 (0.057) 0.033 (0.048) 0.912 0.22 (0.28) 0.213
21–30 mm from ventricle volume (mm3), mean (SD) 66 (201) 59 (195) 91 (226) 0.166 0.018 (0.048) 0.021 (0.055) 0.010) (0.018) 0.422 0.09 (0.23) <0.001
31–40 mm from ventricle volume (mm3), mean (SD) 14 (69) 12 (64) 21 (84) 0.969 0.006 (0.030) 0.007 (0.035) 0.001 (0.005) 0.969 0.02 (0.10) <0.001
Non-rim WM
lesion
Count, mean (SD) 53.7 (55.4) 39.5 (31.9) 97.33 (84.8) 0.003 0.912 (0.079) 0.908 (0.081) 0.928 (0.073) 0.280 - -
 Tot volume (mm3), mean (SD) 3362 (4208) 2403 (3308) 6302 (5332) <0.001 0.780 (0.216) 0.763 (0.223) 0.834 (0.187) 0.221 - -
Periventicular volume (mm3), mean (SD) 2196 (2980) 1502 (2420) 4324 (3578) <0.001 0.437 (0.212) 0.337 (0.202) 0.561 (0.197) 0.016 0.56 (0.21) -
Paraventricular volume (mm3), mean (SD) 691 (930) 511 (701) 1246 (1301) 0.013 0.187 (0.121) 0.192 (0.126) 0.170 (0.106) 0.558 0.24 (0.13) -
21–30 mm from ventricle volume (mm3), mean (SD) 378 (423) 292 (315) 643 (589) 0.034 0.121 (0.094) 0.130 (0.102) 0.092 (0.057) 0.375 0.15 (0.11) -
31–40 mm from ventricle volume (mm3), mean (SD) 95 (132) 98 (144) 88 (84) 0.663 0.036 (0.045) 0.044 (0.049) 0.012 (0.010) 0.052 0.05 (0.06) -

Significance testing:

RR vs SPMS: Mann-Whitney test

Band/tot ratio PRL vs non-rim WM lesions: Wilcoxon signed rank test between correspondent bands Bold indicates a statistically significant difference with a p-value<0.05

Abbreviations: MS: multiple sclerosis; PRL: paramagnetic rim lesions; RRMS: relapsing-remitting MS; SD: standard deviation; SPMS: secondary progressive MS; WM: white matter