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Published in: Journal of Cancer Research and Clinical Oncology 3/2019

Open Access 01-03-2019 | Glioma | Original Article – Cancer Research

Radiomics-based machine learning methods for isocitrate dehydrogenase genotype prediction of diffuse gliomas

Authors: Shuang Wu, Jin Meng, Qi Yu, Ping Li, Shen Fu

Published in: Journal of Cancer Research and Clinical Oncology | Issue 3/2019

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Abstract

Purpose

Reliable and accurate predictive models are necessary to drive the success of radiomics. Our aim was to identify the optimal radiomics-based machine learning method for isocitrate dehydrogenase (IDH) genotype prediction in diffuse gliomas.

Methods

Eight classical machine learning methods were evaluated in terms of their stability and performance for pre-operative IDH genotype prediction. A total of 126 patients were enrolled for analysis. Overall, 704 radiomic features extracted from the pre-operative MRI images were analyzed. The patients were randomly assigned to either the training set or the validation set at a ratio of 2:1. Feature selection and classification model training were done using the training set, whereas the predictive performance and stability of the model were independently assessed using the validation set.

Results

Random Forest (RF) showed high predictive performance (accuracy 0.885 ± 0.041, AUC 0.931 ± 0.036), whereas neural network (NN) (accuracy 0.829 ± 0.064, AUC 0.878 ± 0.052) and flexible discriminant analysis (FDA) (accuracy 0.851 ± 0.049, AUC 0.875 ± 0.057) displayed low predictive performance. With regard to stability, RF also showed high robustness against data perturbation (relative standard deviations, RSD 3.87%).

Conclusions

RF is a promising machine learning method in predicting IDH genotype. Development of an accurate and reliable model can assist in the initial diagnostic evaluation and treatment planning for diffuse glioma patients.
Appendix
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Metadata
Title
Radiomics-based machine learning methods for isocitrate dehydrogenase genotype prediction of diffuse gliomas
Authors
Shuang Wu
Jin Meng
Qi Yu
Ping Li
Shen Fu
Publication date
01-03-2019
Publisher
Springer Berlin Heidelberg
Published in
Journal of Cancer Research and Clinical Oncology / Issue 3/2019
Print ISSN: 0171-5216
Electronic ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-018-2787-1

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