arXiv:2409.19583eess.IVcs.CV2024-09中稿 · ance rate 17% for …被引 7

基于MRI影像精准预测胶质瘤分子状态,助力个性化治疗

Brain Tumor Classification on MRI in Light of Molecular Markers

  • 从零构建专用CNN模型,避免预训练模型干扰
  • 在156张图像上达96.4% F1分数,性能优于主流模型
  • 适合医学影像分析与精准医疗研究者参考

低级别胶质瘤中1p/19q基因共缺失与临床预后相关,准确预测该状态对治疗和随访至关重要。现有基于迁移学习的ResNet、AlexNet等模型因包含大量非医学图像相关参数,诊断结果不可靠。为此,本文自底向上设计专用MRI卷积神经网络,结合卷积堆叠、丢弃层与全连接操作,有效缓解过拟合。训练中通过数据增强与高斯噪声注入扩充数据集,并采用三折交叉验证优化模型。在包含125例共缺失与31例非共缺失的验证集上,所提模型达到96.37% F1分数、97.46%精确率和96.34%召回率,显著优于微调后的InceptionV3、VGG16与MobileNetV2。

原文摘要 · Abstract (English)

In research findings, co-deletion of the 1p/19q gene is associated with clinical outcomes in low-grade gliomas. The ability to predict 1p19q status is critical for treatment planning and patient follow-up. This study aims to utilize a specially MRI-based convolutional neural network for brain cancer detection. Although public networks such as RestNet and AlexNet can effectively diagnose brain cancers using transfer learning, the model includes quite a few weights that have nothing to do with medical images. As a result, the diagnostic results are unreliable by the transfer learning model. To deal with the problem of trustworthiness, we create the model from the ground up, rather than depending on a pre-trained model. To enable flexibility, we combined convolution stacking with a dropout and full connect operation, it improved performance by reducing overfitting. During model training, we also supplement the given dataset and inject Gaussian noise. We use three--fold cross-validation to train the best selection model. Comparing InceptionV3, VGG16, and MobileNetV2 fine-tuned with pre-trained models, our model produces better results. On an validation set of 125 codeletion vs. 31 not codeletion images, the proposed network achieves 96.37\% percent F1-score, 97.46\% percent precision, and 96.34\% percent recall when classifying 1p/19q codeletion and not codeletion images.

脑肿瘤分类MRI分析分子标记深度学习

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