MT MR imaging–derived parameters in control subjects imaged with different imaging systems
| Parameter | Control Group B (n = 10) | Control Group C (n = 4) | Relative Difference | P Value | ||
|---|---|---|---|---|---|---|
| Mean ± SD | SD/Mean | Mean ± SD | SD/Mean | |||
| Global MTR | 38.97 ± 1.07 | 2.75% | 27.56 ± 0.97 | 3.53% | 34.31% | <.001 |
| Mean MTR | 39.11 ± 1.04 | 2.65% | 27.69 ± 0.96 | 3.45% | 34.19% | <.001 |
| MTR histogram peak height | 8.99 ± 1.03 | 11.45% | 7.23 ± 0.52 | 7.17% | 21.73% | .007 |
| MTR histogram peak position | 42.10 ± 0.88 | 2.09% | 28.75 ± 0.96 | 3.34% | 37.69% | <.001 |
| MTR25 | 36.90 ± 1.29 | 3.49% | 24.00 ± 1.41 | 5.89% | 42.36% | <.001 |
| MTR50 | 40.70 ± 1.06 | 2.60% | 28.00 ± 0.82 | 2.92% | 36.97% | <.001 |
| MTR75 | 43.60 ± 0.97 | 2.22% | 31.75 ± 0.96 | 3.02% | 31.45% | <.001 |
| AMTR2/3 | 57.03 ± 2.47 | 4.33% | 59.50 ± 1.55 | 2.62% | 4.25% | .091 |
| BSMTR2/3 | 6.77 ± 0.86 | 12.70% | 9.25 ± 0.57 | 6.16% | 30.92% | <.001 |