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The receiver operating characteristic curves of radiomic models based on different CT-phase images in the training (A–C) and test (D–F) cohort, respectively. N-model: NCP model; A-model: AP model; V-model: VP model; A+V-model: AP+VP model; A+V+N-model: AP+VP+NCP model; A&V-model: AP&VP model; A&V&N-model: AP&VP&NCP-model.
