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Value of enhanced MRI radiomics in predicting IDH-1 genotype in gliomas
TANG Wei  DUAN Junyan  YU Ziyi  ZHAI Zhaohua 

Cite this article as: Tang W, Duan JY, Yu ZY, et al. Value of enhanced MRI radiomics in predicting IDH-1 genotype in gliomas[J]. Chin J Magn Reson Imaging, 2022, 13(5): 111-114. DOI:10.12015/issn.1674-8034.2022.05.020.

[Abstract] Objective To explore the value of a radiomic model based on preoperative-enhanced MR images in the assessment of the IDH-1 genotype in patients with gliomas.Materials and Methods A retrospective analysis was performed on 102 patients with gliomas confirmed by surgical pathology in our hospital from 2017 to 2021 with complete preoperative brain-enhanced MRI images, including 73 patients with wild -type of IDH-1 (12 patients with WHO grade 2, 15 patients with grade 3, 46 patients with grade 4), 29 patients with an IDH-1 mutation (15 patients with WHO grade 2, 10 patients with grade 3, 4 patients with grade 4). All patients were randomly assigned to training group and validation group according to a ratio of 7∶3, 851 features were extracted using 3D-Slicer software. Least absolute shrinkage and selection operator was finally conducted to obtain 4 optimized subset of the feature to build the radiomic model, and the model was then tested with cross-validation. The area under the ROC curve was performed to evaluate the performance of the model.Results The combine model had the best performance, and the AUC of the training group and the validation group were respectively 0.886 (95% CI: 0.81-0.96) and 0.889 (95% CI: 0.77-1.00), the sensitivity were 0.90, 0.86, the specificity were 0.55, 0.55, and the accuracy were 80%, 77%. There was a statistically significant difference between the combine model and the clinic model (P<0.05). The enhanced MR radiomics model had the similar predictive performance with the clinic model, and had no statistically significant between them.Conclusions The combine radiomics model based on the preoperative-enhanced MRI can effectively predict the IDH-1 genotype of gliomas.
[Keywords] gliomas;magnetic resonance imaging;enhanced;isocitrate dehydrogenase;genotype

TANG Wei   DUAN Junyan   YU Ziyi   ZHAI Zhaohua*  

Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China

Zhai ZH, E-mail:

Conflicts of interest   None.

Received  2021-10-26
Accepted  2022-04-28
DOI: 10.12015/issn.1674-8034.2022.05.020
Cite this article as: Tang W, Duan JY, Yu ZY, et al. Value of enhanced MRI radiomics in predicting IDH-1 genotype in gliomas[J]. Chin J Magn Reson Imaging, 2022, 13(5): 111-114.DOI:10.12015/issn.1674-8034.2022.05.020

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