Table 1.
Subject demographics and scanning information
| Subject | Age (Years) | Sport | Gender | # Prior concussions | NP normal post‐injury (days) | Symptom free (days) | Return‐to‐play (days) | Days between baseline and injury | MRI inclusion | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Baseline | 2‐day scan | 2‐week scan | 2‐month scan | |||||||||
| 1 | 18 | Football | M | 0 | 11 | 5 | 16 | 67 | Y | Y | Y | Y |
| 2 | 23 | Ice Hockey | M | 5 | 18 | 18 | DNRa | 113 | Y | Y | Y | Y |
| 3 | 22 | Ice Hockey | F | 1 | 14 | 11 | 20 | 84 | Y | N | N | Y |
| 4 | 20 | Football | M | 0 | 18 | 8 | 25 | 386 | Y | N | Y | N |
| 5 | 22 | Football | M | 0 | N/A | 21 | DNRa | 63 | Y | Y | Y | Y |
| 6 | 21 | Football | M | 0 | 8 | 4 | 13 | 67 | Y | Y | Y | Y |
| 7 | 21 | Football | M | 0 | 6 | 4 | 8 | 103 | Y | Y | Y | N |
| 8 | 20 | Ice Hockey | M | 1 | 11 | 7 | 48 | 355 | Y | Y | Y | N |
| 9 | 20 | Ice Hockey | M | 0 | 15 | 13 | DNRa | 66 | Y | Y | Y | N |
| 10 | 20 | Ice Hockey | F | 1 | 21 | 12 | 26 | 452 | Y | Y | N | Y |
| 11 | 21 | Ice Hockey | F | 0 | 14 | 15 | DNRb | 473 | Y | N | Y | Y |
| 12 | 18 | Ice Hockey | M | 0 | 15 | 5 | DNRb | 161 | Y | N | Y | Y |
| 13 | 22 | Ice Hockey | M | 0 | 6 | 4 | 11 | 439 | Y | Y | Y | Y |
Y: scan included in analysis; N: scan excluded either due to excessive head motion or unavailability of the subject; DNRa: subject developed symptoms during return‐to‐play progression and, hence, did not return‐to‐play; DNRb: subject did not return‐to‐play, athletic season over; N/A: NP testing did not return to baseline.