Comparison between quantitative measurements of the symptomatic nerve roots and those of the contralateral asymptomatic nerve roots on Proset images
| Side | Mean Value of Nerve Root Diameter (mm) | Mean Value of SIRa | ||||
|---|---|---|---|---|---|---|
| Transverse | DRG | Exit | Transverse | DRG | Exit | |
| Ipsilateral | 4.2 ± 0.9 | 6.33 ± 0.12 | 7.2 ± 1.9 | 2.66 ± 1.48 | 2.51 ± 1.67 | 1.77 ± 0.75 |
| Contralateral | 3.3 ± 0.77 | 5.15 ± 0.98 | 4.72 ± 1.1 | 2.57 ± 1.41 | 2.14 ± 1.53 | 1.27 ± 0.54 |
Note:—Transverse indicates transverse nerve root; Exit, exit nerve root.
↵a Width of the nerve roots with chemical radiculitis is larger than that of the contralateral asymptomatic nerve roots (paired t test, P < .005). SIR of the DRG and exit nerve roots with chemical radiculitis is higher than that of the contralateral asymptomatic nerve roots (paired t test, P < .005).