Journal: Advances in Radiation Oncology
Article Title: An Automatic Deep Learning–Based Workflow for Glioblastoma Survival Prediction Using Preoperative Multimodal MR Images: A Feasibility Study
doi: 10.1016/j.adro.2021.100746
Figure Lengend Snippet: Deep learning (DL)–based feature extraction scheme using VGG19. VGG19 contains 16 convolutional layers, 5 max-pooling layers, and 3 fully connected layers. The average-pooling layers were used for extracting DL-based features. Feature maps and feature vectors after every layer are shown as cuboids and rectangles, respectively. The feature map depth and feature number are shown. A concatenation of fluid-attenuated inversion recovery (FLAIR), T2-weighted (T2w), and contrast-enhanced T1-weighted (CE-T1w) regions of interest (ROIs) was input into the pretrained VGG19 for feature extraction. By average-pooling along the spatial dimensions, 1472 DL-based features were extracted from max-pooling feature maps. Abbreviations: Conv = convolutional layer; ReLU = rectified linear unit.
Article Snippet: We used a pretrained VGG19 that is available in the deep learning toolbox (version 12.0) from MATLAB (version 9.5, R2018b).
Techniques: Extraction