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Fig. 3 | Radiation Oncology

Fig. 3

From: DCE-MRI of locally-advanced carcinoma of the uterine cervix: Tofts analysis versus non-model-based analyses

Fig. 3

Log-rank and ROC analyses. The values of Ktrans at each percentile of the frequency distributions and the tumor volumes (RV-Ktrans) with Ktrans values below a wide range of threshold values were calculated for the 80 tumors included in the study, and for each Ktrans percentile and each Ktrans threshold value, the outcome of the patients with high values of Ktrans or RV-Ktrans was compared with the outcome of those with low values, using the log-rank test with DFS and OS as endpoints. ROC analysis was carried out to indentify the Ktrans percentile and Ktrans threshold value with the highest discriminative power. a Log-rank p value versus Ktrans percentile. b Area under ROC-curve versus Ktrans percentile. c Log-rank p value versus Ktrans threshold value. d Area under ROC-curve versus Ktrans threshold value

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