基于记忆深度图注意力网络的乳腺癌新辅助化疗疗效预测

doi:10.3969/j.issn.0258-8021.2025.04.005

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Abstract Neoadjuvant chemotherapy (NACT) is widely used in the treatment of breast cancer patients. Studies have shown that patients with a good chemotherapy response, particularly those achieving pathological complete response (pCR), have significantly improved survival rates. However, due to individual differences, some patients may experience poor responses or disease progression, therefore, early prediction of the response to NACT is crucial. Traditional convolutional neural networks (CNNs) have limitations in handling the spatial correlations and heterogeneity of tumor regions, which affects prediction accuracy. To address this, we proposed a graph network method combined with a deep graph attention network (DeepGAT) model and memory layers. We used the SLIC superpixel algorithm to segment the breast region and extract radiomic features from these superpixels. The superpixels were set as feature nodes, and edges were defined based on the weighted Euclidean distance and Pearson correlation coefficient of node features. By combining nodes and edges, we built a complete graph network. Our model included a DeepGAT module that dynamically weights node features using an attention mechanism to capture both local and global information. Additionally, we employed a memory pooling module based on clustering methods, which enhanced classification performance by capturing critical information and long-term dependencies. We used 214 samples, with 149 for training and 65 for testing. We also investigated the impact of graph sparsity coefficients on response to NACT performance, which showed that the best performance was achieved at a sparsity coefficient of 0.09. At this sparsity level, our model achieved AUCs of 0.822±0.027 and 0.811±0.041, significantly outperforming traditional GCN (AUC=0.726±0.045) and GAT (AUC=0.803±0.037) models. These results demonstrated the superior accuracy of our model in predicting response to NACT, providing a solid foundation for future research.

Key words： breast cancer response to NACT graph neural networks sparsity coefficient

Received: 08 October 2024

PACS:

R318

Corresponding Authors: ^*E-mail: lilh@hdu.edu.cn

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	Xu Weichao
	Fan Ming
	Fei Sixiang
	Li Lihua

Cite this article:

Xu Weichao,Fan Ming,Fei Sixiang, et al. Deep Graph Attention Networks with Memory for Prediction of Response to Neoadjuvant Chemotherapy in Breast Cancer[J]. Chinese Journal of Biomedical Engineering, 2025, 44(4): 424-434.

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http://cjbme.csbme.org/EN/10.3969/j.issn.0258-8021.2025.04.005 OR http://cjbme.csbme.org/EN/Y2025/V44/I4/424

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