Table 4.
Table depicting diagnostic accuracy of various magnetic resonance image pulse sequences
| Parameter | HASTEα axial | HASTEα coronal | TRUFIδ | SPAIRβ | 3D FLASHχ | BLADEε |
|---|---|---|---|---|---|---|
| HALO sign | ||||||
| Sensitivity | 100% | * | * | 100% | * | 100% |
| Specificity | 96.9% | 100% | 100% | 96.9% | 100% | 96.9% |
| NPV | 100% | 94.2% | 94.2% | 100% | 94.2% | 100% |
| PPV | 66.6% | * | * | 66.6% | * | 66.6% |
| Nodules | ||||||
| Sensitivity | 50% | 7% | 42.8% | 50% | 28.5% | 50% |
| Specificity | 95.2% | 100% | 95.2% | 95.2% | 100% | 90.4% |
| NPV | 74% | 61.7% | 85.7% | 74% | 67.7% | 73% |
| PPV | 87.5% | 100% | 71.4% | 87.5% | 100% | 77.7% |
| Cavitating nodule | ||||||
| Sensitivity | 100% | * | 100% | 100% | 50% | 100% |
| Specificity | 96.9% | 100% | 100% | 96.9% | 100% | 100% |
| NPV | 100% | 94.2% | 100% | 100% | 97% | 100% |
| PPV | 66.6% | * | 100% | 66.6% | 100% | 100% |
| Consolidation | ||||||
| Sensitivity | 100% | 77% | 100% | 100% | 77% | 100% |
| Specificity | 96% | 100% | 100% | 96% | 100% | 100% |
| NPV | 100% | 92.8% | 100% | 100% | 92.8% | 100% |
| PPV | 90% | 100% | 100% | 90% | 100% | 100% |
| Consolidation with breakdown | ||||||
| Sensitivity | 100% | 50% | 100% | 100% | 50% | 100% |
| Specificity | 96.9% | 96.9% | 96.9% | 96.9% | 96.9% | 96.9% |
| NPV | 100% | 96.9% | 100% | 100% | 96.9% | 100% |
| PPV | 66.6% | 50% | 66.6% | 66.6% | 50% | 66.6% |
| GGOs | ||||||
| Sensitivity | 66.6% | * | 16.6% | 77.7% | 33.3% | 55.5% |
| Specificity | 88.4% | 92.8% | 86.2% | 76.9% | 81.2% | 96.1% |
| NPV | 88.4% | 78.7% | 83.3% | 90.9% | 92.8% | 86.2% |
| PPV | 66.6% | * | 20% | 53.8% | 14.2% | 83.3% |
α
Half-Fourier acquisition single-shot turbo spin-echo.
δ
True fast imaging with steady-state free precession.
β
Spectrally attenuated inversion recovery.
χ
3-Dimensional fast low-angle shot.
ε
Proprietary name for periodically rotated overlapping parallel lines with enhanced reconstruction.
*
Not detected in this sequence. NPV – negative predictive value, PPV – positive predictive value, GGOs – ground-glass opacities