Figure 2:

Graph shows results of two-way sensitivity analysis of MR imaging test performance characteristics. Two-way sensitivity analysis was performed by concurrently varying the sensitivity of MR imaging from 50% to 100% and the specificity from 50% to 100%. Vertically shaded area = combinations of MR imaging sensitivity and specificity for which MR imaging incurred the least life expectancy loss across strategies. Horizontally shaded area = combinations of MR imaging sensitivity and specificity for which MR imaging was no longer preferred and instead, combined US and CT yielded the least life expectancy loss. CT alone was not preferred in any of the circumstances tested in this sensitivity analysis. We found that MR imaging needed to have a sensitivity of at least 91% (with 100% specificity) and a specificity of at least 62% (with 100% sensitivity) to remain the preferred imaging strategy.