CT pulmonary angiography results of 76 patients with submassive (intermediate-risk) pulmonary emboli
| Half-dose rt-PA n=38 (%) | LMWH n=38 (%) | P value | |
| PACTOIR | 75 (12.5–100) | 75 (25–100) | 0.505 |
| Right to left ventricular ratio | 1.2 (1.0–1.7) | 1.2 (0.9–2.0) | 0.888 |
| Pleural effusion | 11 (29.7) | 5 (13.9) | 0.176 |
| Hampton hump | 9 (24.3) | 3 (8.3) | 0.127 |
| Mosaic attenuation | 13 (35.1) | 9 (25.0) | 0.491 |
LMWH, low molecular weight heparin; PACTOIR, pulmonary arterial CT obstruction index rate; rt-PA, tissue-type plasminogen activator.