Table 2. Quantitative diffusion analysis, comparison of the left and right BP in controls.
| Control subjects (n=27) | Left BP (C4-T1) | Right BP (C4-T1) | P value | |||
|---|---|---|---|---|---|---|
| Mean ± SD | Coef. of variation, % | Mean ± SD | Coef. of variation, % | |||
| NQA | 0.09±0.03 | 33.3 | 0.1±0.02 | 20.0 | 0.07 | |
| FA | 0.25±0.02 | 8.00 | 0.25±0.03 | 12.0 | 0.07 | |
| MD (10−3 mm2/s) | 1.97±0.21 | 10.7 | 1.97±0.27 | 15.1 | 0.09 | |
| AD (10−3 mm2/s) | 2.42±0.25 | 10.3 | 2.46±0.29 | 11.8 | 0.53 | |
| RD (10−3 mm2/s) | 1.71±0.29 | 17.0 | 1.73±0.26 | 15.0 | 0.71 | |
The results of calculated GQI/DTI-based metrics (NQA, FA, MD, AD, and RD) in the left and right hand side of the brachial plexus (C4-T1) are listed with their standard deviations. BP, brachial plexus; NQA, normalized quantitative anisotropy; FA, fractional anisotropy; MD, mean diffusivity; AD, axial diffusivity; RD, radial diffusivity; GQI, generalized q-sampling imaging; DTI, diffusion tensor imaging.