Table 2:
Qualitative image scoring results for fine anatomic structures and metallic artifacts
| Scale Points | CBCT Group (n = 32) | MDCT Group (n = 19) | P Value |
|---|---|---|---|
| Cochlear inner wall | |||
| Not visualized (0) | 1 (3%) | 0 (0%) | >.99 |
| Barely visualized (1) | 3 (9%) | 2 (10.5%) | |
| Well-visualized (2) | 6 (19%) | 3 (15.8%) | |
| Perfectly visualized (3) | 22 (69%) | 14 (73.7%) | |
| Cochlear lateral wall | |||
| Not visualized (0) | 0 (0%) | 1 (5%) | .001 |
| Barely visualized (1) | 0 (0%) | 0 (0%) | |
| Well-visualized-(2) | 2 (6%) | 8 (42%) | |
| Perfectly visualized (3) | 30 (94%) | 10 (53%) | |
| Modiolus | |||
| Not visualized (0) | 0 (0%) | 0 (0%) | .37 |
| Barely visualized (1) | 2 (6%) | 0 (0%) | |
| Well-visualized (2) | 5 (16%) | 1 (5%) | |
| Perfectly visualized (3) | 25 (78%) | 18 (95%) | |
| Osseous spiral, lamina | |||
| Not visualized (0) | 18 (56%) | 19 (100%) | .002 |
| Barely visualized (1) | 10 (31%) | 0 (0%) | |
| Well -visualized (2) | 4 (13%) | 0 (0%) | |
| Perfectly visualized (3) | 0 (0%) | 0 (0%) | |
| Mastoid facial, canal wall | |||
| Not visualized (0) | 4 (13%) | 4 (21%) | .07 |
| Barely visualized (1) | 10 (31%) | 6 (32%) | |
| Well-visualized (2) | 9 (28%) | 9 (47%) | |
| Perfectly visualized (3) | 9 (28%) | 0 (0%) | |
| Metallic artifacts | |||
| Very strong artifact (0) | 0 (0%) | 0 (0%) | <.001 |
| Strong artifacts (1) | 6 (18.8%) | 14 (74%) | |
| Moderate artifacts (2) | 22 (68.8%) | 5 (26%) | |
| Weak artifacts (3) | 4 (12.5%) | 0 (0%) |