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Published in: Clinical and Translational Oncology 1/2020

01-01-2020 | Magnetic Resonance Imaging | Research Article

Multiparametric MRI-based radiomics analysis for prediction of breast cancers insensitive to neoadjuvant chemotherapy

Authors: Qianqian Xiong, Xuezhi Zhou, Zhenyu Liu, Chuqian Lei, Ciqiu Yang, Mei Yang, Liulu Zhang, Teng Zhu, Xiaosheng Zhuang, Changhong Liang, Zaiyi Liu, Jie Tian, Kun Wang

Published in: Clinical and Translational Oncology | Issue 1/2020

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Abstract

Purpose

To evaluate the value of multiparametric magnetic resonance imaging (MRI) in pretreatment prediction of breast cancers insensitive to neoadjuvant chemotherapy (NAC).

Methods

A total of 125 breast cancer patients (63 in the primary cohort and 62 in the validation cohort) who underwent MRI before receiving NAC were enrolled. All patients received surgical resection, and Miller–Payne grading system was applied to assess the response to NAC. Grade 1–2 cases were classified as insensitive to NAC. We extracted 1941 features in the primary cohort. After feature selection, the optimal feature set was used to construct a radiomic signature using machine learning. We built a combined prediction model incorporating the radiomic signature and independent clinical risk factors selected by multivariable logistic regression. The performance of the combined model was assessed with the results of independent validation.

Results

Four features were selected for the construction of the radiomic signature based on the primary cohort. Combining with independent clinical factors, the combined prediction model for identifying the Grade 1–2 group reached a better discrimination power than the radiomic signature, with an area under the receiver operating characteristic curve of 0.935 (95% confidence interval 0.848–1) in the validation cohort, and its clinical utility was confirmed by the decision curve analysis.

Conclusion

The combined model based on radiomics and clinical variables has potential in predicting drug-insensitive breast cancers.
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Metadata
Title
Multiparametric MRI-based radiomics analysis for prediction of breast cancers insensitive to neoadjuvant chemotherapy
Authors
Qianqian Xiong
Xuezhi Zhou
Zhenyu Liu
Chuqian Lei
Ciqiu Yang
Mei Yang
Liulu Zhang
Teng Zhu
Xiaosheng Zhuang
Changhong Liang
Zaiyi Liu
Jie Tian
Kun Wang
Publication date
01-01-2020
Publisher
Springer International Publishing
Published in
Clinical and Translational Oncology / Issue 1/2020
Print ISSN: 1699-048X
Electronic ISSN: 1699-3055
DOI
https://doi.org/10.1007/s12094-019-02109-8

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