用多模态MRI与临床数据提升神经疾病诊断准确率
NeuroMoE: A Transformer-Based Mixture-of-Experts Framework for Multi-Modal Neurological Disorder Classification
- 基于Transformer的专家混合框架,融合多种MRI与临床数据
- 验证准确率达82.47%,比基线方法高10%以上
- 适合需要高精度神经疾病分类的临床研究与系统开发
多模态磁共振成像(MRI)与临床数据的融合在真实临床环境中具有提升神经疾病(NDs)诊断潜力。深度学习近年成为从医学数据中提取关键模式的有效工具,但现有方法难以有效利用多模态MRI与临床数据,导致性能不佳。为此,我们使用一个专有的、为神经疾病研究定制的多模态临床数据集,提出一种基于Transformer的专家混合(MoE)框架用于神经疾病分类,整合解剖(aMRI)、弥散张量成像(DTI)和功能(fMRI)三种MRI模态及临床评估。框架采用Transformer编码器捕捉三维MRI的空间关系,通过模态专用专家实现特征提取,并设计自适应融合门控机制动态整合专家输出,以保证最优预测性能。全面实验表明,该多模态方法显著提升诊断准确率,尤其在区分重叠疾病状态方面表现突出。验证准确率达到82.47%,较基线方法提升超10%,展现出将多模态学习应用于真实临床数据改善神经疾病诊断的巨大潜力。
原文摘要 · Abstract (English)
The integration of multi-modal Magnetic Resonance Imaging (MRI) and clinical data holds great promise for enhancing the diagnosis of neurological disorders (NDs) in real-world clinical settings. Deep Learning (DL) has recently emerged as a powerful tool for extracting meaningful patterns from medical data to aid in diagnosis. However, existing DL approaches struggle to effectively leverage multi-modal MRI and clinical data, leading to suboptimal performance. To address this challenge, we utilize a unique, proprietary multi-modal clinical dataset curated for ND research. Based on this dataset, we propose a novel transformer-based Mixture-of-Experts (MoE) framework for ND classification, leveraging multiple MRI modalities-anatomical (aMRI), Diffusion Tensor Imaging (DTI), and functional (fMRI)-alongside clinical assessments. Our framework employs transformer encoders to capture spatial relationships within volumetric MRI data while utilizing modality-specific experts for targeted feature extraction. A gating mechanism with adaptive fusion dynamically integrates expert outputs, ensuring optimal predictive performance. Comprehensive experiments and comparisons with multiple baselines demonstrate that our multi-modal approach significantly enhances diagnostic accuracy, particularly in distinguishing overlapping disease states. Our framework achieves a validation accuracy of 82.47\%, outperforming baseline methods by over 10\%, highlighting its potential to improve ND diagnosis by applying multi-modal learning to real-world clinical data.
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