脑部MRI对急性中风的序列类型分类使用自主监督机器学习算法
Seongwon Na1,2, Yousun Ko3, Su Jung Ham3
1Department of Computer Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea.
Diagnostics (Basel, Switzerland)
|January 11, 2024
概括
一个新的自主监督机器学习算法,ImageSort-net,使用DICOM元数据准确地分类大脑MRI序列. 这种方法实现了与人类专家可比的性能,为医学成像分析创造了一个可持续的自学系统.
科学领域:
- 医疗成像医学成像
- 机器学习 机器学习
- 放射学 放射学是一门学科.
背景情况:
- 对脑MRI序列的准确分类对于诊断和治疗至关重要.
- 目前的方法可能依赖于手动标签,这可能耗时且容易出现错误.
- 开发自动化,可靠的分类系统是医学成像分析的一个关键挑战.
研究的目的:
- 提出一种自主监督的机器学习算法,用于脑MRI序列类型的分类.
- 使用DICOM元数据作为培训的监督信号.
- 开发一个可持续的自学系统,用于自动化MRI分类.
主要方法:
- 开发了ImageSort-net,这是一个利用MRI采集参数的机器学习框架.
- 从DICOM元数据创建基于规则的虚拟标签,用于培训.
- 使用医院和多中心试验数据集训练和评估模型,比较与虚拟标签 (MLvirtual) 和人类专家标签 (MLhumans) 训练的ML算法.
主要成果:
- 在医院数据集上,ImageSort-net (MLvirtual) 的准确性与MLhumans (98.5%对99%) 的准确性相当.
- 在较小的多中心数据集上,MLvirtual的准确性较低 (95.6%与99.4%相比),但在使用集成数据进行重新训练后 (99.7%) 显著改善.
- 重新训练的ML虚拟机和ML人类在多中心数据集上 (99.7%) 实现了相同的推断性能.
结论:
- 自主监督机器学习使用DICOM元数据的基于规则的虚拟标签对脑MRI序列分类有效.
- ImageSort-net框架为医学成像提供了一个可持续的自我学习系统.
- 这种方法减少了对手工标签的依赖,并提高了分类准确性,特别是在整合不同的数据集时.
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