Prediction of methylation status of MGMT promoter in WHO gradeⅡ,Ⅲ glioma based on MRI deep learning model
10.3760/cma.j.cn112149-20200825-01029
- VernacularTitle:基于MRI深度学习模型预测WHOⅡ、Ⅲ级胶质瘤MGMT启动子甲基化状态
- Author:
Caiqiang XUE
1
;
Xiaohao DU
;
Long JIN
;
Xiaoai KE
;
Bin ZHANG
;
Junlin ZHOU
Author Information
1. 兰州大学第二医院放射科 兰州大学第二临床医学院 甘肃省医学影像重点实验室 730030
- Keywords:
Glioma;
Magnetic resonance imaging;
O 6-methylguanine-DNA methyhransferase;
Deep learning
- From:
Chinese Journal of Radiology
2021;55(7):734-738
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the value of a deep learning model based on MRI in predicting the methylation status of MGMT in WHO Ⅱ, Ⅲ gliomas.Methods:The clinical and imaging data of 121 patients with WHO grade Ⅱ, Ⅲ glioma confirmed by surgical pathology and molecular pathology in the Second Hospital of Lanzhou University from June 2016 to June 2020 were retrospectively analyzed. Among them, the MGMT promoter was methylated. A total of 78 cases were metabolized and 43 cases were unmethylated. T 2WI and T 1WI enhanced sequence images of 121 cases of WHO Ⅱ, Ⅲ gliomas were collected, and all the images of each patient including the lesion level were selected manually, and were randomly divided into training set and validation set according to 7∶3. The EfficientNet-B3 convolutional neural network was used to build independent prediction models (T 2-net, T 1C-net, TS-net) based on T 2WI, T 1WI enhancement, T 2WI combined with T 1WI enhancement, and the prediction performance of each model was evaluated separately through the ROC curve. Results:The T 2-net model in the validation set presented an accuracy of 72.3%, a sensitivity of 64.7%, a specificity of 73.3%, and an area under the curve (AUC) of 0.72 for predicting the methylation status of the MGMT promoter in WHO Ⅱ, Ⅲ gliomas. The T 1C-net model showed an accuracy of 66.8%, a sensitivity of 68.3%, a specificity of 66.9%, and an AUC of 0.72. The TS-net model showed an accuracy of 81.8%, a sensitivity of 63.1%, a specificity of 85.0%, and AUC of 0.78. Conclusions:The EfficientNet-B3 convolutional neural network based on MRI can predict the methylation status of the MGMT promoter of WHO Ⅱ, Ⅲ gliomas; the TS-net model has the best prediction performance.
