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• W4310961803 abstract "Background Determination of survival time in women with endometrial cancer using clinical features remains imprecise. Features from MRI may improve the survival estimation allowing improved treatment planning. Purpose To identify clinical features and imaging signatures on T2‐weighted MRI that can be used in an integrated model to estimate survival time for endometrial cancer subjects. Study Type Retrospective. Population Four hundred thirteen patients with endometrial cancer as training (N = 330, 66.41 ± 11.42 years) and validation (N = 83, 67.60 ± 11.89 years) data and an independent set of 82 subjects as testing data (63.26 ± 12.38 years). Field Strength/Sequence 1.5‐T and 3‐T scanners with sagittal T2 ‐weighted spin echo sequence. Assessment Tumor regions were manually segmented on T2‐weighted images. Features were extracted from segmented masks, and clinical variables including age, cancer histologic grade and risk score were included in a Cox proportional hazards (CPH) model. A group least absolute shrinkage and selection operator method was implemented to determine the model from the training and validation datasets. Statistical Tests A likelihood‐ratio test and decision curve analysis were applied to compare the models. Concordance index (CI) and area under the receiver operating characteristic curves (AUCs) were calculated to assess the model. Results Three radiomic features (two image intensity and volume features) and two clinical variables (age and cancer grade) were selected as predictors in the integrated model. The CI was 0.797 for the clinical model (includes clinical variables only) and 0.818 for the integrated model using training and validation datasets, the associated mean AUC value was 0.805 and 0.853. Using the testing dataset, the CI was 0.792 and 0.882, significantly different and the mean AUC was 0.624 and 0.727 for the clinical model and integrated model, respectively. Data Conclusion The proposed CPH model with radiomic signatures may serve as a tool to improve estimated survival time in women with endometrial cancer. Evidence Level 4 Technical Efficacy Stage 2" @default.
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• W4310961803 date "2022-12-09" @default.
• W4310961803 modified "2023-10-12" @default.
• W4310961803 title "An Integrated <scp>Clinical‐MR</scp> Radiomics Model to Estimate Survival Time in Patients With Endometrial Cancer" @default.
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• W4310961803 doi "https://doi.org/10.1002/jmri.28544" @default.
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