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arXiv 2408.09367eess.IVcs.CV

利用深度学习与CT成像改进肺癌诊断与生存预测

Improving Lung Cancer Diagnosis and Survival Prediction with Deep Learning and CT Imaging

University of California Davis(加利福尼亚大学戴维斯分校)

Xiawei Wang, James Sharpnack, Thomas C. M. Lee

AI总结:

本研究针对肺癌早诊与生存预测需求,提出结合扩展Cox模型的小批量损失与二元交叉熵的卷积神经网络方法,在国家肺癌筛查试验数据集上实现了肺癌分类与生存预测的高性能,为肺癌诊疗优化提供了新路径。

摘要:

肺癌是癌症相关死亡的主要诱因,早期诊断与治疗对提升患者生存结局至关重要。本文提出采用卷积神经网络,构建肺癌风险与CT图像所显示的肺部形态之间的非线性关系模型。我们应用了一种小批量损失函数,该函数对Cox比例风险模型进行扩展,以应对神经网络带来的非凸性问题,同时也支持大规模数据集的训练。此外,我们提出将小批量损失与二元交叉熵相结合,以同时预测肺癌的发生情况和死亡风险。仿真结果验证了带删失机制和不带删失机制的小批量损失函数,以及其与二元交叉熵结合方案的有效性。我们在National Lung Screening Trial(国家肺癌筛查试验)数据集上,采用多种3D卷积神经网络架构对所提方法进行评估,在肺癌分类和生存预测任务中均取得了较高的AUC和C-index得分。这些来自仿真和真实数据实验的结果,凸显了我们的方法在改善肺癌诊断与治疗方面的潜力。

英文摘要:

Lung cancer is a major cause of cancer-related deaths, and early diagnosis and treatment are crucial for improving patients' survival outcomes. In this paper, we propose to employ convolutional neural networks to model the non-linear relationship between the risk of lung cancer and the lungs' morphology revealed in the CT images. We apply a mini-batched loss that extends the Cox proportional hazards model to handle the non-convexity induced by neural networks, which also enables the training of large data sets. Additionally, we propose to combine mini-batched loss and binary cross-entropy to predict both lung cancer occurrence and the risk of mortality. Simulation results demonstrate the effectiveness of both the mini-batched loss with and without the censoring mechanism, as well as its combination with binary cross-entropy. We evaluate our approach on the National Lung Screening Trial data set with several 3D convolutional neural network architectures, achieving high AUC and C-index scores for lung cancer classification and survival prediction. These results, obtained from simulations and real data experiments, highlight the potential of our approach to improving the diagnosis and treatment of lung cancer.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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