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The Pre-treatment PET signatures could significantly stratify patients’ OS and DFS. Kaplan-Meier survival analysis of pre-treatment Rad-score-defined risk levels in the training, validation cohorts and combined cohort. OS: the training cohort (A), validation cohort (B), and combined cohort (C). DFS: the training cohort (D), validation cohort (E), and combined cohort (F). Abbreviations: OS: overall survival. DFS: disease free survival.
