CIDP (n=15) | Control (n=29) | p Value* | |
---|---|---|---|
Diameter (mm) | |||
C5 | 3.89±1.36 | 3.75±1.09 | 0.92 |
C6 | 5.31±1.52 | 4.80±1.16 | 0.32 |
C7 | 5.70±1.73 | 4.93±1.14 | 0.16 |
C8 | 4.91±1.72 | 4.30±0.75 | 0.36 |
Nerve-to-muscle CNR | |||
C5 | 32.68±24.76 | 16.63±11.21 | 0.03 |
C6 | 36.76±24.26 | 20.06±15.03 | 0.02 |
C7 | 34.75±24.75 | 15.92±8.40 | 0.01 |
C8 | 30.09±22.87 | 18.49±17.51 | 0.04 |
CNR score | 134.29±93.79 | 71.10±42.85 | 0.01 |
*Wilcoxon rank-sum test.
CIDP, chronic inflammatory demyelinating polyradiculoneuropathy; CNR, contrast-to-noise ratio; CNR score, the sum of nerve-to-muscle CNRs for C5–C8 nerve roots on the employed side.