Table A2.
Parameters of DTI, T2 relaxometry, and CSA per nerve and region. Values are mean (SD).
| Location | Nerve | FA | AD (10−3 mm2/s) | RD (10−3 mm2/s) | MD (10−3 mm2/s) | ||||||||
| Controls | ALS | MMN | Controls | ALS | MMN | Controls | ALS | MMN | Controls | ALS | MMN | ||
| Upper arm | Median | 0.60 (0.07) | 0.58 (0.06) | 0.50 (0.10) | 2508.9 (177.5) | 2577.9 (242.2) | 2528.7 (126.7) | 860.1 (169.0) | 992.5 (169.1) | 1152.2 (225.6) | 1397.7 (138.6) | 1521.0 (188.7) | 1611.0 (174.1) |
| Radial | 0.54 (0.06) | 0.51 (0.07) | 0.47 (0.11) | 2649.2 (301.5) | 2554.1 (283.8) | 2679.5 (139.7) | 1012.0 (169.1) | 1116.2 (306.7) | 1242.0 (268.2) | 1545.7 (193.3) | 1593.4 (290.7) | 1721.2 (207.1) | |
| Ulnar | 0.55 (0.09) | 0.53 (0.06) | 0.47 (0.06) | 2329.4 (185.9) | 2605.2 (202.2) | 2420.2 (480.4) | 875.2 (201.9) | 1110.7 (193.6) | 1170.9 (273.3) | 1347.6 (167.8) | 1608.9 (193.6) | 1587.3 (359.5) | |
| Upper arm | Mean | 0.56 (0.06) | 0.54 (0.04) | 0.48 (0.07) | 2503.5 (168.6) | 2583.6 (195.9) | 2542.8 (221.1) | 913.6 (149.3) | 1075.8 (173.9) | 1188.3 (215.6) | 1431.5 (132.9) | 1577.7 (179.7) | 1639.8 (214.1) |
| Thigh | Sciatic | 0.55 (0.09) | 0.54 (0.06) | 0.51 (0.08) | 2190.4 (297.0) | 2053.1 (275.1) | 2103.5 (347.1) | 852.0 (229.3) | 846.1 (207.3) | 936.3 (329.3) | 1286.2 (226.0) | 1248.4 (226.0) | 1325.4 (353.8) |
| Calf | Tibial | 0.40 (0.05) | 0.47 (0.06) | 0.42 (0.06) | 2348.8 (157.3) | 2274.1 (291.2) | 2383.0 (133.7) | 1211.7 (74.4) | 1112.4 (241.8) | 1235.0 (200.2) | 1574.7 (68.1) | 1495.5 (252.0) | 1617.7 (191.1) |
| Location | Nerve | T2app (ms) | PSD (a.u.) | CSA (mm2) | |||||||||
| controls | ALS | MMN | controls | ALS | MMN | controls | ALS | MMN | |||||
| Upper arm | Median | 63.9 (8.0) | 64.4 (7.4) | 85.0 (21.2) | 301.4 (44.8) | 3330.8 (63.2) | 354.0 (50.9) | 6.68 (1.05) | 7.82 (1.52) | 11.79 (6.09) | |||
| Radial | 69.3 (5.9) | 71.2 (6.5) | 86.8 (21.9) | 169.6 (21.4) | 214.7 (31.9) | 237.1 (52.5) | 2.80 (0.75) | 3.04 (0.75) | 7.61 (6.83) | ||||
| Ulnar | 64.2 (11.4) | 68.6 (12.0) | 82.1 (18.4) | 324.9 (55.8) | 354.8 (74.8) | 380.9 (107.3) | 3.93 (1.12) | 4.50 (0.73) | 7.58 (5.04) | ||||
| Upper arm | Mean | 65.8 (6.5) | 68.1 (6.5) | 84.6 (18.2) | 260.6 (39.0) | 300.1 (46.3) | 324.0 (49.7) | 4.46 (0.78) | 5.12 (0.77) | 9.00 (4.39) | |||
| Thigh | Sciatic | 76.8 (4.3) | 72.7 (4.7) | 83.4 (21.8) | 173.7 (30.4) | 174.4 (30.5) | 193.5 (65.9) | 17.0 (4.24) | 17.8 (4.21) | 23.1 (7.82) | |||
| Calf | Tibial | 67.9 (8.9) | 68.1 (8.1) | 72.9 (9.8) | 198.3 (22.7) | 206.7 (36.4) | 196.6 (49.3) | 7.70 (0.69) | 8.24 (2.83) | 9.68 (3.24) | |||
Abbreviations: ALS, amyotrophic lateral sclerosis; MMN, multifocal motor neuropathy; FA, fractional anisotropy; AD, axial diffusivity; RD, radial diffusivity; MD, mean diffusivity; T2app, apparent T2 relaxation time; PSD, proton spin density; CSA, cross-sectional area.