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. Author manuscript; available in PMC: 2022 Sep 30.
Published in final edited form as: Biomed Phys Eng Express. 2021 Sep 30;7(6):10.1088/2057-1976/ac27c3. doi: 10.1088/2057-1976/ac27c3

Figure 6.

Figure 6.

(a) Receiver operator characteristic (ROC) curve for change in SUV95% achieved an AUROC of 0.86 for predicting irColitis. Comparison metrics SUVmean, SUVmax, and SUVtotal were not predictive of irColitis. An increase in SUV95% of greater than +40% (operating point indicated by *) had a sensitivity of 75% and specificity of 88% in identifying pre-colitis bowel change. (b) Sensitivity of irColitis detection to bowel SUV histogram percentile. The AUROC was calculated for each percentile of the bowel SUV histogram X (SUVX%) where X was varied from 0 to 100. Optimal performance was observed at SUV95%, with an AUC of 0.86. Percentiles from SUV93% to SUV98% all achieved AUC > 0.80.