MR imaging assessment results for both readers
| Reader 1 | Reader 2 | Average (%) | |
|---|---|---|---|
| Cause of T1H | |||
| Melanin only | 179 (83.6%) | 170 (79.4%) | 81.5% |
| Blood products only | 26 (12.1%) | 22 (10.3%) | 11.2% |
| Both melanin and blood | 7 (3.3%) | 13 (6.1%) | 4.7% |
| Artifacts | 2 (0.9%) | 9 (4.2%) | 2.6% |
| Relative conspicuity (overall) | |||
| Only seen on T1-SPACE | 1 (0.5%) | 0 (0%) | 0.2% |
| Better on T1-SPACE | 1 (0.5%) | 4 (1.9%) | 1.2% |
| Similar conspicuity | 31 (14.5%) | 41 (19.2%) | 16.8% |
| Better on MPRAGE | 123 (57.5%) | 122 (57.0%) | 57.2% |
| Only seen on MPRAGE | 58 (27.1%) | 47 (22.0%) | 24.5% |
| Relative conspicuity (melanin) | |||
| Only seen on T1-SPACE | 0 (0%) | 0 (0%) | 0.0% |
| Better on T1-SPACE | 1 (0.6%) | 2 (1.2%) | 0.9% |
| Similar conspicuity | 19 (10.6%) | 29 (17.1%) | 13.8% |
| Better on MPRAGE | 114 (63.7%) | 98 (57.6%) | 60.7% |
| Only seen on MPRAGE | 45 (25.1%) | 41 (24.1%) | 24.6% |
| Relative conspicuity (blood) | |||
| Only seen on T1-SPACE | 1 (3.8%) | 0 (0%) | 1.9% |
| Better on T1-SPACE | 0 (0%) | 1 (4.3%) | 2.2% |
| Similar conspicuity | 6 (23.1%) | 6 (26.1%) | 24.6% |
| Better on MPRAGE | 7 (26.9%) | 12 (52.2%) | 39.5% |
| Only seen on MPRAGE | 12 (46.2%) | 4 (17.4%) | 31.8% |