Table 4 Frequency (%) of chest CT type and their appropriateness based on ACR appropriateness criteria
Chest CT type | Frequency | ACR criteria appropriateness | |||
|---|---|---|---|---|---|
Usually appropriate | Maybe appropriate | Usually not appropriate | No definition | ||
Pulmonary CT angiography | 109 | 48 (44%) | 2 (1.8%) | 54 (49.5%) | 5 (4.6%) |
Spiral chest CT with contrast | 65 | 34 (52%) | 8 (12.3%) | 8 (12.3%) | 6 (9.2) |
Chest HRCT | 29 | 16 (55.2%) | 7 (24.1%) | 3 (10.3%) | 3 (10.3%) |
Chest CT without contrast | 13 | 9 (69.2) | 1 (7.7) | 3 (23.1%) | 0 (0%) |