Table 2. Imaging results compared with final diagnosis.
| Appendicitis (n = 30) | No appendicitis (n = 11) | ||
| Gray-scale ultrasonography | |||
| Diameter (≥6 mm) | Present | 30 | 2 |
| Absent | 0 | 9 | |
| Echogenicity of periappendiceal fat | Present | 30 | 2 |
| Absent | 0 | 9 | |
| Thickening of appendiceal wall | Present | 30 | 3 |
| Absent | 0 | 8 | |
| Appendicolith | Present | 10 | 0 |
| Absent | 20 | 11 | |
| Diameter (≥6 mm), echogenicity of periappendiceal fat, thickening of appendiceal wall | Present (all) | 30 | 2 |
| Absent (one or more) | 0 | 9 | |
| Shear wave elastography | |||
| Elastic modulus scale (kilopascal) | ≥12.5 kPa | 28 | 0 |
| <12.5 kPa | 2 | 11 | |
| Computed tomography | |||
| Diameter (≥6 mm) | Present | 30 | 0 |
| Absent | 0 | 11 | |
| Enhancement of periappendiceal fat | Present | 30 | 3 |
| Absent | 0 | 8 | |
| Thickening of appendiceal wall | Present | 30 | 2 |
| Absent | 0 | 9 | |
| Appendicolith | Present | 10 | 0 |
| Absent | 20 | 11 | |
| Diameter (≥6 mm), echogenicity of periappendiceal fat, thickening of appendiceal wall | Present (all) | 30 | 0 |
| Absent (one or more) | 0 | 11 |