Results of Index Imaging for Pulmonary Embolism
| Index scan | Imaging test | PE− (216 [88.2%]) | PE+ (10 [4.1%]) | Indeterminate (19 [7.8%]) | P |
| All (n = 245)* | CTPA (n = 91) | 80 (87.9%) | 5 (5.5%) | 6 (6.6%) | 0.63 |
| V/Q (n = 154) | 136 (88.3%) | 5 (3.2%) | 13 (8.4%) | ||
| Normal (n = 172) chest radiograph | CTPA (n = 40) | 37 (92.5%) | 1 (2.5%) | 2 (5.0%) | 0.84 |
| V/Q (n = 132) | 118 (89.4%) | 4 (3.0%) | 10 (7.6%) | ||
| Abnormal (n = 64) chest radiograph | CTPA (n = 47) | 39 (80.8%) | 4 (8.8%) | 4 (8.5%) | 0.57 |
| V/Q (n = 17) | 13 (76.5%) | 1 (5.9%) | 3 (17.7%) |
↵* Nine patients did not undergo chest radiographs.
PE = pulmonary embolism.