Table 5. Diagnostic test characteristics of Hi-SNR MRI-C in diagnosing steatosis at different MRS-based PDFF cutoffs.
MRS-PDFF cutoff using equivalent MRI-C thresholds | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | PPV (%) (95% CI) | NPV (%) (95% CI) | Accuracy (%) (95% CI) | |
---|---|---|---|---|---|---|
3% | Standard MRI-C | 99.1 (96.7 – 99.9) | 72.2 (58.4 – 83.5) | 93.5 (89.5 – 96.3) | 95.1 (83.5 – 99.4) | 93.7 (90.1 – 96.3) |
Hi-SNR MRI-C | 98.2 (95.3 – 99.5) | 90.7 (79.7 – 96.9) | 97.7 (94.7 – 99.3) | 92.5 (81.8 – 97.9) | 96.7 (93.8 – 98.5) | |
4% | Standard MRI-C | 98.0 (94.9 – 99.4) | 83.3 (72.7 – 91.1) | 94.2 (90.1 – 97.0) | 93.8 (84.8 – 98.3) | 94.1 (90.6 – 96.6) |
Hi-SNR MRI-C | 97.0 (93.6 – 98.9) | 90.3 (81.0 – 96.0) | 96.5 (92.9 – 98.6) | 91.5 (82.5 – 96.8) | 95.2 (91.9 – 97.4) | |
5% | Standard MRI-C | 93.6 (89.1 – 96.6) | 94.0 (86.7 – 98.0) | 97.2 (93.6 – 99.1) | 86.8 (78.1 – 93.0) | 93.7 (90.1 – 96.3) |
Hi-SNR MRI-C | 95.7 (91.7 – 98.1) | 98.8 (93.5 – 100) | 99.4 (96.9 – 100) | 91.2 (83.4 – 96.1) | 96.7 (93.8 – 98.5) | |
6% | Standard MRI-C | 92.9 (87.9 – 96.3) | 98.0 (93.1 – 99.8) | 98.7 (95.5 – 99.8) | 89.3 (82.0 – 94.3) | 94.8 (91.5 – 97.1) |
Hi-SNR MRI-C | 95.3 (90.9 – 97.9) | 97.1 (91.6 – 99.4) | 98.2 (94.7 – 99.6) | 92.5 (85.8 – 96.7) | 95.9 (92.9 – 98.0) | |
7% | Standard MRI-C | 91.7 (86.3 – 95.5) | 99.1 (95.2 – 100) | 99.3 (96.2 – 100) | 89.7 (83.0 – 94.4) | 94.8 (91.5 – 97.1) |
Hi-SNR MRI-C | 93.6 (88.6 – 96.9) | 99.1 (95.2 – 100) | 99.3 (96.3 – 100) | 91.9 (85.6 – 96.0) | 95.9 (92.9 – 98.0) |
PPV: Positive predictive value; NPV: Negative predictive value