Comparison of diagnostic ability of 64-slice and 256-slice CT scanners
| Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) | Diagnostic accuracy (%) | |
| 64-slice | |||||
| Overall | 45.5 | 98.1 | 81.3 | 91.0 | 90.2 |
| Blunt | 60.9 | 98.5 | 77.8 | 96.8 | 95.6 |
| Penetrating | 37.5 | 97.1 | 84.6 | 78.6 | 79.4 |
| Left-sided injury | 46.7 | 99.3 | 87.5 | 94.9 | 94.5 |
| Right-sided injury | 43.9 | 98.8 | 73.5 | 95.8 | 94.9 |
| 256-slice | |||||
| Overall | 56.5 | 93.7 | 56.5 | 93.7 | 89.0 |
| Blunt | 71.4 | 92.8 | 41.7 | 97.8 | 91.3 |
| Penetrating | 50.0 | 95.1 | 72.7 | 87.9 | 85.7 |
| Left-sided injury | 56.3 | 95.5 | 56.3 | 95.5 | 91.8 |
| Right-sided injury | 57.1 | 98.0 | 57.1 | 98.0 | 96.2 |