Neuroimaging Parameters RRMS (n=19) Stroke (n=18) RRMS vs. Stroke (P-value**) T2WI       Total PVL Volume 1583 ± 341.2* 2154 ± 854.7 0.531 Total PVL Count 4.895 ± 0.5402 4.444 ± 0.5437 0.5608 FLAIR       Total PVL Volume 3831 ± 912.8 5311 ± 1956 0.49 Total PVL Count 6.842 ± 0.5936 7.333 ± 0.4501 0.5174 * Values are the Mean ± SEM ** Unpaired t-test was used for statistical analysis and calculation of p-value.

Table 4: PVL Volume and Count in Age-Matched RR-MS and Stroke Patients.