疾病驱动的域概括用于基于神经成像的阿尔茨海默病的评估
Diala Lteif1,2, Sandeep Sreerama2, Sarah A Bargal3
1Department of Computer Science, Boston University, Boston, MA, USA.
medRxiv : the preprint server for health sciences
|October 9, 2023
概括
这项研究引入了一种新的深度学习方法,使用磁共振成像 (MRI) 检测认知障碍. 通过利用模型的解释性,该方法提高了跨不同数据集的概括性,改善了阿尔茨海默病和轻度认知障碍的分类.
科学领域:
- 神经成像是一种神经成像.
- 人工智能的人工智能
- 生物医学数据科学 生物医学数据科学
背景情况:
- 使用MRI检测认知障碍的深度学习模型至关重要,但由于数据的可变性而面临挑战.
- 域泛化 (DG) 框架通过使模型能够在不同的数据源中传输知识来提供解决方案.
- 模型可解释性可以提高这些深度学习模型的概括性.
研究的目的:
- 开发和验证一种新的深度学习方法,用于使用MRI评估认知障碍.
- 提高分类模型在多个独立群体中的通用性.
- 利用模型的解释性来提高认知障碍检测的性能和可靠性.
主要方法:
- 使用磁共振成像 (MRI) 扫描和从四个大,独立的队列 (ADNI,FHS,AIBL,NACC) 的临床诊断.
- 开发了一个深度神经网络,结合了模型的可解释性,特别是将类智的注意力与统一的视觉突出性对齐.
- 训练了一个分类器来区分正常认知 (NC),轻度认知障碍 (MCI) 和阿尔茨海默病 (AD).
主要成果:
- 提出的方法证明了与最先进的技术相比具有竞争力的性能.
- 该方法与死后组织学相关性有所改善,提供了黄金标准验证.
- 该模型成功地在来自多个队伍的多种MRI数据集中进行了概括.
结论:
- 利用模型解释性是提高神经成像深度学习领域概括性的有效策略.
- 开发的方法显示了在不同临床环境中对认知障碍的可靠,可泛化检测的前景.
- 这项工作为验证医疗图像分析中的域概括框架提供了基础,特别是在神经退行性疾病中.
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