Research Article
Intraoperative Ultrasound Staging for Colorectal Liver Metastases in the Era of Liver-Specific Magnetic Resonance Imaging: Is It Still Worthwhile?
Table 3
Performance of intraoperative staging and MRI.
| | | Whole Population | No preop. chemotherapy | | MRI | IOUS1 | MRI | IOUS |
| | Number of patients without FN lesions | 541 | 682 | 195 | 226 | | Total number of patients | 721 | 721 | 232 | 232 | | Sensitivity (%) | 75.1 | 94.5 | 84.1 | 97.4 | | PPV (%) | 79.7 | 93.5 | 83.7 | 97.8 | | LR− | 0.26 | 0.07 | 0.16 | 0.03 |
| | | MRI | IOUS1 | MRI | IOUS |
| | Number of patients without FP lesions | 692 | 690 | 231 | 228 | | Total of patients | 721 | 721 | 232 | 232 | | Specificity (%) | 95.9 | 95.7 | 99.5 | 98.3 | | NPV (%) | 95.7 | 96.5 | 97.4 | 97.7 | | LR+ | 17.5 | 21.9 | 84 | 48.5 |
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MRI, magnetic resonance imaging; FP, false positive; FN, false negative; PPV, positive predictive value; NPV, negative predictive value. 1IOUS with or without contrast enhancement.
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