From: Measurement of jugular foramen diameter using MRI in multiple sclerosis patients compared to control subjects
Foramen diameter
Right
Left
Sum
Relapsing-remitting (mm)
6.5 ± 1.7
5.6 ± 1.4
12.1 ± 2.4
Secondary progressive (mm)
6.2 ± 1.5
5.2 ± 1.1
11.3 ± 2.2
p value*
0.577
0.332
0.344