Table 2: Preoperative US examinations in relation to CT examinations performed 2003-2012.
| CT examination | Ultrasound examination | ||||
|---|---|---|---|---|---|
| Not performed | Direct signs of appendicitis | Indirect signs of appendicitis | Inconclusive | Total | |
| Not performed | 667 | 159 | 9 | 72 | 907 |
| Direct signs of appendicitis | 156 | 6 | 5 | 48 | 215 |
| Indirect signs of appendicitis | 12 | 1 | 0 | 5 | 18 |
| Total | 835 | 166 | 14 | 125 | 1140 |