arXiv:2506.11167cs.CVcs.LG2025-06被引 24

构建通用脑影像基础模型,提升功能磁共振分析的可复现性与迁移能力。

Towards a general-purpose foundation model for fMRI analysis

  • 直接从4D脑影像学习通用表征,避免复杂预处理和任务定制化设计。
  • 在超5万受试者数据上预训练,跨医院多疾病诊断准确率领先现有方法。
  • 适合脑科学、临床诊断与神经疾病研究者使用,推动标准化分析流程。

功能磁共振成像(fMRI)对研究脑功能与诊断神经疾病至关重要,但现有分析方法因复杂的预处理流程和任务特异性模型设计,面临可复现性与迁移性难题。本文提出NeuroSTORM(神经影像基础模型,带空间-时间优化表征建模),直接从4D fMRI体积中学习通用表征,并高效迁移至多种下游任务。NeuroSTORM在超过5万受试者、2865万帧的fMRI数据上预训练,覆盖多个研究中心及5至100岁人群。其结合高效的时空建模结构与轻量级任务适配机制,实现可扩展的预训练与快速迁移。实验表明,NeuroSTORM在五项下游任务中均优于现有方法,包括年龄/性别预测、表型识别、疾病诊断、个体再识别与状态分类。在包含17种诊断的两个多中心临床队列中,其诊断性能最优,同时仍能有效预测心理与认知表型。结果表明,NeuroSTORM有望成为可复现、可迁移的标准化基础模型。

原文摘要 · Abstract (English)

Functional MRI (fMRI) is crucial for studying brain function and diagnosing neurological disorders. However, existing analysis methods suffer from reproducibility and transferability challenges due to complex preprocessing pipelines and task-specific model designs. In this work, we introduce NeuroSTORM (Neuroimaging Foundation Model with Spatial-Temporal Optimized Representation Modeling) that learns generalizable representations directly from 4D fMRI volumes and enables efficient transfer to diverse downstream applications. Specifically, NeuroSTORM is pre-trained on 28.65 million fMRI frames from over 50,000 subjects, spanning multiple centers and ages 5 to 100. It combines an efficient spatiotemporal modeling design and lightweight task adaptation to enable scalable pre-training and fast transfer to downstream applications. Here we show that NeuroSTORM consistently outperforms existing methods across five downstream tasks, including demographic prediction, phenotype prediction, disease diagnosis, re-identification, and state classification. On two multi-hospital clinical cohorts with 17 diagnoses, NeuroSTORM achieves the best diagnosis performance while remaining predictive of psychological and cognitive phenotypes. These results suggest that NeuroSTORM could become a standardized foundation model for reproducible and transferable fMRI analysis.

脑影像基础模型fMRI迁移学习

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