Diagnostic image-quality ratings by static field strength of scanner and overalla
| Diagnostic Qualityb | 1.5T Scanner | 3T Scanner | Overall (1.5T + 3T) | |||
|---|---|---|---|---|---|---|
| Syn (N = 392) | Con (N = 392) | Syn (N = 371) | Con (N = 371) | Syn (N = 763) | Con (N = 763) | |
| Acceptable for diagnostic use (3,4,5) | 380 (97%) | 387 (99%) | 354 (95%) | 358 (96%) | 734 (96%) | 745 (98%) |
| Excellent (rated 5) | 64 (16%) | 183 (47%) | 37 (10%) | 103 (28%) | 101 (13%) | 286 (37%) |
| Good (rated 4) | 266 (68%) | 170 (43%) | 230 (62%) | 199 (54%) | 496 (65%) | 369 (48%) |
| Acceptable (rated 3) | 50 (13%) | 34 (9%) | 87 (23%) | 56 (15%) | 137 (18%) | 90 (12%) |
| Unacceptable for diagnostic use (1,2) | 12 (3%) | 5 (1%) | 17 (5%) | 13 (4%) | 29 (4%) | 18 (2%) |
| Poor (rated 2) | 10 (3%) | 5 (1%) | 16 (4%) | 12 (3%) | 26 (3%) | 17 (2%) |
| Unacceptable (rated 1) | 2 (1%) | 0 | 1 (0.3%) | 1 (0.3%) | 3 (0.4%) | 1 (0.1%) |