Table 2.
Overview of the frequencies in percent of the evaluation of the visibility of the different anatomical structures in the two groups (high dosage versus low dosage) with the corresponding p values (∗values marked with an asterisk are highly significant).
| High dosage (N = 165) | Low dosage (N = 151) | p value | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Excellent | Well | Poor | Not evaluable | Excellent | Well | Poor | Not evaluable | ||
| Maxillary sinus (lateral wall) | 79.6 | 15.5 | 4.9 | 0.0 | 80.7 | 15.3 | 4.0 | 0.0 | 0.791 |
| Uncinate process | 66.9 | 18.8 | 13.4 | 0.9 | 67.4 | 11.1 | 14.8 | 6.7 | 0.022∗ |
| Inferior turbinate (os turbinale) | 87.8 | 7.0 | 4.3 | 0.9 | 87.0 | 7.3 | 4.3 | 1.3 | 0.917 |
| Infraorbital nerve canal | 54.5 | 32.4 | 12.7 | 0.3 | 59.3 | 29.3 | 11.3 | 0.0 | 0.682 |
| Lamina papyracea (infundibulum) | 85.8 | 9.1 | 5.2 | 0.0 | 93.7 | 5.0 | 1.3 | 0.0 | 0.119 |
| Anterior ethmoidal artery canal | 84.2 | 11.5 | 3.6 | 0.6 | 91.7 | 7.7 | 0.7 | 0.0 | 0.107 |
| Lamina papyracea (ant. ethm. art.) | 95.2 | 1.8 | 3.0 | 0.0 | 97.0 | 2.3 | 0.7 | 0.0 | 0.248 |
| Lateral lamella olfactory fossa | 86.4 | 10.0 | 3.6 | 0.0 | 93.3 | 3.7 | 3.0 | 0.0 | 0.148 |
| Cribriform plate | 94.4 | 27.0 | 21.8 | 1.8 | 73.0 | 18.7 | 8.3 | 0.0 | 0.000∗ |
| Posterior ethmoidal artery canal | 67.9 | 15.8 | 10.0 | 6.4 | 75.7 | 13.0 | 8.7 | 2.7 | 0.238 |
| Optical nerve | 93.3 | 4.3 | 2.4 | 0.0 | 98.3 | 1.3 | 0.3 | 0.0 | 0.176 |
| Vidian nerve | 94.2 | 2.1 | 3.0 | 0.6 | 97.7 | 2.3 | 0.0 | 0.0 | 0.211 |
| Maxillary nerve | 95.4 | 2.4 | 2.1 | 0.0 | 99.0 | 0.7 | 0.3 | 0.0 | 0.320 |
| Carotid artery | 83.0 | 12.8 | 3.5 | 0.6 | 97.7 | 1.7 | 0.7 | 0.0 | 0.003∗ |
| Nasolacrimal duct | 98.5 | 1.5 | 0.0 | 0.0 | 99.3 | 0.7 | 0.0 | 0.0 | 0.406 |
| Frontal sinus | 98.2 | 1.2 | 0.6 | 0.0 | 99.3 | 0.7 | 0.0 | 0.0 | 0.386 |