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European Radiology
Published in: European Radiology 5/2019

01-05-2019 | Computed Tomography

Development of a radiomics nomogram based on the 2D and 3D CT features to predict the survival of non-small cell lung cancer patients

Authors: Lifeng Yang, Jingbo Yang, Xiaobo Zhou, Liyu Huang, Weiling Zhao, Tao Wang, Jian Zhuang, Jie Tian

Published in: European Radiology | Issue 5/2019

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Abstract

Objectives

The aim of this study was to develop a radiomics nomogram by combining the optimized radiomics signatures extracted from 2D and/or 3D CT images and clinical predictors to assess the overall survival of patients with non-small cell lung cancer (NSCLC).

Methods

One training cohort of 239 and two validation datasets of 80 and 52 NSCLC patients were enrolled in this study. Nine hundred seventy-five radiomics features were extracted from each patient’s 2D and 3D CT images. Least absolute shrinkage and selection operator (LASSO) regression was used to select features and generate a radiomics signature. Cox hazard survival analysis and Kaplan-Meier were performed in both cohorts. The radiomics nomogram was developed by integrating the optimized radiomics signature and clinical predictors, its calibration and discrimination were evaluated.

Results

The radiomics signatures were significantly associated with NSCLC patients’ survival time. The signature derived from the combined 2D and 3D features showed a better prognostic performance than those from 2D or 3D alone. Our radiomics nomogram integrated the optimal radiomics signature with clinical predictors showed a significant improvement in the prediction of patients’ survival compared with clinical predictors alone in the validation cohort. The calibration curve showed predicted survival time was very close to the actual one.

Conclusions

The radiomics signature from the combined 2D and 3D features further improved the predicted accuracy of survival prognosis for the patients with NSCLC. Combination of the optimal radiomics signature and clinical predictors performed better for individualied survival prognosis estimation in patients with NSCLC. These findings might affect trearment strategies and enable a step forward for precise medicine.

Key Points

• We found both 2D and 3D radiomics signature have favorable prognosis, but 3D signature had a better performance.
• The radiomics signature generated from the combined 2D and 3D features had a better predictive performance than those from 2D or 3D features.
• Integrating the optimal radiomics signature with clinical predictors significantly improved the predictive power in patients’ survival compared with clinical TNM staging alone.
Appendix
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Metadata
Title
Development of a radiomics nomogram based on the 2D and 3D CT features to predict the survival of non-small cell lung cancer patients
Authors
Lifeng Yang
Jingbo Yang
Xiaobo Zhou
Liyu Huang
Weiling Zhao
Tao Wang
Jian Zhuang
Jie Tian
Publication date
01-05-2019
Publisher
Springer Berlin Heidelberg
Published in
European Radiology / Issue 5/2019
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-018-5770-y

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