Table 3.
Comparison of 3T and 7T MRI in Detecting WMCs and CMHs in Fighters and Patients With TBI
| Nos. of WMCs and CMHs | Fighters (n = 19) |
Patients with TBI (n = 16a) |
||||
|---|---|---|---|---|---|---|
| 3T | 7T | p | 3T | 7T | p value | |
| Reader 1 | ||||||
| Median no. of WMCs [IQR] (range) | 1 [0, 6] (0, 37) | 3 [1, 14] (0, 57) | <0.001 | 4 [1, 8] (0, 100) | 8 [2, 13] (1, 100) | 0.002 |
| Median no. of CMHs [IQR] (range) | 0 [0, 0] (0, 2) | 0 [0, 0] (0, 2) | 0.999 | 0 [0, 0] (0, 30) | 0 [0, 1] (0, 30) | 0.181 |
| Reader 2 | ||||||
| Median no. of WMCs [IQR] (range) | 3 [1, 8] (0, 41) | 3 [2, 14] (0, 46) | <0.001 | 6 [2, 10] (0, 140) | 7 [2, 16] | 0.008 |
| Median no. of CMHs [IQR] (range) | 0 [0, 0] (0, 8) | 0 [0, 0] (0, 9) | 0.371 | 0 [0, 0] (0, 40) | 0 [0, 1] (0, 45) | 0.181 |
a
Only 15 patients with TBI were assessed for WMCs.
T, Tesla; MRI, magnetic resonance imaging; WMCs, white matter changes; CMHs, cerebral microhemorrhages; TBI, head trauma; IQR, interquartile range.