用多模态纵向MRI数据,95%准确率预测阿尔茨海默病进展。
Alzheimer's Disease Prediction Using EffNetViTLoRA and BiLSTM with Multimodal Longitudinal MRI Data
- 融合卷积网络与视觉变换器提取影像空间特征,再用双向LSTM建模时间演变。
- 在48个月时点上,对稳定型和进行性轻度认知障碍的预测准确率达95.05%。
- 适合从事神经退行性疾病早期诊断与多模态深度学习研究者参考。
阿尔茨海默病(AD)是一种常见的神经退行性疾病,会逐步损害记忆、决策能力及整体认知功能。由于该病不可逆,早期预测对及时干预至关重要。轻度认知障碍(MCI)是介于正常衰老与AD之间的过渡阶段,在早期诊断中具有重要意义。然而,预测MCI是否进展为AD仍具挑战性,因为并非所有MCI患者都会转化为AD。根据转化状态,MCI可分为稳定型(sMCI)和进行性(pMCI)。本研究基于阿尔茨海默病神经影像计划(ADNI)数据,提出一种通用的端到端深度学习模型,用于从纵向多模态MRI数据中预测AD进展。模型结合卷积神经网络与视觉变换器,捕捉磁共振成像(MRI)中的局部空间特征与全局上下文依赖关系;进一步利用双向长短期记忆网络(BiLSTM)处理四个连续时间点的影像特征及部分非影像生物标志物,预测受试者在第48个月的认知状态。该多模态模型在区分sMCI与pMCI方面平均预测准确率达到95.05%,优于现有研究。结果表明,结合空间与时间建模可实现当前最优的纵向AD预测性能,凸显其在阿尔茨海默病早期检测中的有效性。
原文摘要 · Abstract (English)
Alzheimer's disease (AD) is a prevalent neurodegenerative disorder that progressively impairs memory, decision-making, and overall cognitive function. As AD is irreversible, early prediction is critical for timely intervention and management. Mild Cognitive Impairment (MCI), a transitional stage between cognitively normal (CN) aging and AD, plays a significant role in early AD diagnosis. However, predicting MCI progression remains a significant challenge, as not all individuals with MCI convert to AD. MCI subjects are categorized into stable MCI (sMCI) and progressive MCI (pMCI) based on conversion status. In this study, we propose a generalized, end-to-end deep learning model for AD prediction using MCI cases from the Alzheimer's Disease Neuroimaging Initiative (ADNI). Our hybrid architecture integrates Convolutional Neural Networks and Vision Transformers to capture both local spatial features and global contextual dependencies from Magnetic Resonance Imaging (MRI) scans. To incorporate temporal progression, we further employ Bidirectional Long Short-Term Memory (BiLSTM) networks to process features extracted from four consecutive MRI timepoints along with some other non-image biomarkers, predicting each subject's cognitive status at month 48. Our multimodal model achieved an average progression prediction accuracy of 95.05\% between sMCI and pMCI, outperforming existing studies in AD prediction. This work demonstrates state-of-the-art performance in longitudinal AD prediction and highlights the effectiveness of combining spatial and temporal modeling for the early detection of Alzheimer's disease.
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