Corticospinal tract (CST) volumes in patients with amyotrophic lateral sclerosis (ALS) and healthy subjects
| Measurement | Healthy Control Subjects (n = 17) | ALS Patients (n = 16) | ||
|---|---|---|---|---|
| Left (10−3 mm3) | Right (10-3 mm3) | Affected (10−3 mm3) | Nonaffected (10−3 mm3) | |
| CST volume (mean ± SD) | 10.19 ± 0.94 | 10.43 ± 0.96 | 9.18 ± 0.70* | 9.33 ± 0.64* |
* Statistically different by unpaired t-test (P < .01).