Table 6 Variation in radiographer responses in specifying the appropriate error-correction strategy for MR image-quality errors
Correction Strategy | Group Control N = 16 Experimental N = 19 | Number of images | Total Number of responses | Number (%) correct (pre-test) | Number (%) Dis-improved | Number (%) incorrect (pre-test) | Number (%) improved |
|---|---|---|---|---|---|---|---|
Change Sequence parameters | Control | 4 | 64 | 15 (23.4%) | 4 (26.7%) | 49 (76.6%) | 5 (10.2%) |
Experimental | 76 | 17 (22.4%) | 1 (5.9%) | 59 (77.6%) | 42 (71.2%) | ||
Patient setup issue | Control | 2 | 32 | 19 (59.4%) | 5 (26.3%) | 13 (40.6%) | 1 (7.7%) |
Experimental | 38 | 28 (73.7%) | 0 (0%) | 10 (26.3%) | 8 (80%) | ||
Change timing parameters | Control | 3 | 48 | 19 (39.6%) | 4 (21.1%) | 29 (60.4%) | 2 (6.9%) |
Experimental | 57 | 22 (38.6%) | 0 (0%) | 35 (61.4%) | 34 (97.1%) | ||
Artefact | Control | 3 | 48 | 24 (50%) | 3 (12.5%) | 24 (50%) | 2 (8.3%) |
Experimental | 57 | 27 (47.4%) | 1 (3.7%) | 30 (52.6%) | 19 (63.3%) | ||
Correct RF coil | Control | 3 | 48 | 12 (25%) | 4 (33.3%) | 36 (75%) | 5 (13.9%) |
Experimental | 57 | 18 (31.6%) | 6 (33.3%) | 39 (68.4%) | 16 (41%) | ||
Change scanning technique | Control | 5 | 80 | 19 (23.8%) | 5 (26.3%) | 61 (76.3%) | 3 (4.9%) |
Experimental | 95 | 23 (24.2%) | 3 (13%) | 72 (75.8%) | 56 (77.8%) | ||
No technical error evident | Control | 5 | 80 | 62 (77.5%) | 6 (9.7%) | 18 (22.5%) | 6 (33.3%) |
Experimental | 95 | 73 (76.9%) | 7 (9.6%) | 22 (23.2%) | 19 (86.4%) |