Table 3. Diagnostic Performance of Three T2-Weighted Images for Detection of 86 Focal Liver Lesions.
| BH-T2WI | RT-T2WI | MultiVane T2WI | P | ||
|---|---|---|---|---|---|
| Az | Observer 1 | 0.605 | 0.861 | 0.988 | 0.305*, 0.128†, < 0.001‡ |
| Observer 2 | 0.570 | 0.849 | 0.977 | 0.306*, 0.127†, < 0.001‡ | |
| Mean | 0.570 | 0.849 | 0.977 | 0.306*, 0.127†, < 0.001‡ | |
| Sensitivity | Observer 1 | 90.7% (78) | 86.0% (74) | 98.8% (85) | 0.045*, 0.008†, 0.001‡ |
| Observer 2 | 89.5% (77) | 84.9% (73) | 97.7% (84) | 0.045*, 0.008†, 0.001‡ | |
| Mean | 89.5% | 84.9% | 97.7% | 0.045*, 0.008†, 0.001‡ | |
| PPV | Observer 1 | 98.7% [1] | 100.0% [0] | 100.0% [0] | 0.310*, 0.310† |
| Observer 2 | 98.7% [1] | 100.0% [0] | 100.0% [0] | 0.310*, 0.310† | |
| Mean | 98.7% | 100.0% | 100.0% | 0.310*, 0.310† |
P value was corrected by Bonferroni's method for multiple testing. Az values represent area under ROC curve. Numbers in parentheses and brackets represent number of true- and false-positive lesions, respectively. *P values are BH-T2WI and RT-T2WI, †BH-T2WI and MultiVane T2WI, ‡RT-T2WI and MultiVane T2WI. BH-T2WI = breath-hold multi-shot T2-weighted image, PPV = positive predictive value, ROC = receiver operating characteristic, RT-T2WI = respiratory-triggered multi-shot T2-weighted image