脑病:无监督的神经疾病检测利用未注释的T1加权脑MRI图像
Md Mahfuzur Rahman Siddiquee1,2, Jay Shah1,2, Teresa Wu1,2
1Arizona State University.
概括
使用生成对抗网络 (GAN) 的新方法Brainomaly增强了无监督的神经疾病检测. 它有效地使用混合的未标记数据和神经图像特定的翻译,以改进阿尔茨海默氏症和头痛检测.
科学领域:
- 医学成像分析分析 医学成像分析
- 深度学习用于异常检测检测.
- 神经科学和神经成像技术
背景情况:
- 获取大型注释医疗数据集用于深度学习是具有挑战性和昂贵的,特别是对于罕见疾病.
- 无监督的异常检测方法减少了注释工作,但在神经图像上通常表现不佳.
- 现有的方法无法有效地利用未注释的混合数据集 (健康和疾病) 来治疗神经疾病.
研究的目的:
- 开发一种针对神经图像的无监督神经疾病检测方法.
- 为了提高异常检测的性能,使用未注释的混合数据集.
- 在没有注释数据的情况下,引入一种新的模型选择指标.
主要方法:
- 提出了Brainomaly,一个基于生成对抗网络 (GAN) 的图像对图像翻译框架.
- 使用未注释的数据集,包含健康和患病的受试者.
- 引入了一个伪曲线下面面积 (AUC) 度量,用于推断期间的模型选择.
主要成果:
- 脑异常显著超过了最先进的无监督异常检测方法.
- 在检测阿尔茨海默病和头痛方面表现出卓越的表现.
- 废弃性研究证实了拟议成分的有效性.
结论:
- 脑病理为无监督的神经疾病检测提供了一个强大的解决方案,特别是当注释数据稀缺时.
- 该方法的定制图像对图像翻译和混合数据的使用提高了检测准确性.
- 伪AUC指标有助于对现实世界的应用进行可靠的模型选择.
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