arXiv:2409.06609cs.CVcs.LG2024-09

提升CNN在代谢谱建模中的精度,让模型更可信。

Improving the Precision of CNNs for Magnetic Resonance Spectral Modeling

  • 用改进的误差分析方法提升CNN对代谢谱的预测精度
  • 实验证明新方法可降低预测标准差,提高结果可靠性
  • 适合医学影像与深度学习结合的研究者参考

磁共振波谱成像(MRSI)能无创提供组织代谢信息,但临床应用受限于昂贵且依赖专家的数据处理。利用机器学习预测MRS相关参数是潜在解决方案,但深度学习模型的可信度仍存疑。当前研究多关注均方误差,缺乏对标准差、置信区间等更全面的精度评估。本文强调全面误差表征的重要性,并提出提升卷积神经网络(CNN)在光谱建模这一定量任务中精度的方法。实验揭示了不同技术的优势与权衡,深入分析了其内在机制及相互作用,为类似回归任务提供了实用指导。

原文摘要 · Abstract (English)

Magnetic resonance spectroscopic imaging is a widely available imaging modality that can non-invasively provide a metabolic profile of the tissue of interest, yet is challenging to integrate clinically. One major reason is the expensive, expert data processing and analysis that is required. Using machine learning to predict MRS-related quantities offers avenues around this problem, but deep learning models bring their own challenges, especially model trust. Current research trends focus primarily on mean error metrics, but comprehensive precision metrics are also needed, e.g. standard deviations, confidence intervals, etc.. This work highlights why more comprehensive error characterization is important and how to improve the precision of CNNs for spectral modeling, a quantitative task. The results highlight advantages and trade-offs of these techniques that should be considered when addressing such regression tasks with CNNs. Detailed insights into the underlying mechanisms of each technique, and how they interact with other techniques, are discussed in depth.

CNN代谢谱精度提升医学影像

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