健康GAN:从未注释的医学图像中学习,以检测与人类疾病相关的异常
Md Mahfuzur Rahman Siddiquee1,2, Jay Shah1,2, Teresa Wu1,2
1Arizona State University, Tempe, AZ, USA.
概括
HealthyGAN通过将混合数据集转换为健康图像来改进医疗图像异常检测,从而在没有手动注释的情况下更好地识别疾病. 这种方法增强了无监督异常检测,提高了诊断准确度.
科学领域:
- 医学成像分析 医学成像分析
- 医疗保健中的人工智能
- 计算机视觉 计算机视觉
背景情况:
- 在医学图像 (如MRI,X射线) 中自动检测异常有助于诊断疾病.
- 目前的方法通常仅依赖于健康受试者,当有无注释混合数据集时,这就不足了.
- 专家手动注释是昂贵和耗时的,限制了监督方法的可扩展性.
研究的目的:
- 为了提高医疗图像中的无监督异常检测.
- 为了提高诊断模型,利用健康和无注释混合数据集.
- 解决现有方法在现实世界场景中的局限性,其中大量的未注释数据.
主要方法:
- 提出了HealthyGAN,一种新的单向图像对图像翻译技术.
- HealthyGAN学会从混合数据集 (健康和疾病) 中翻译图像,使其只与健康图像相似.
- 异常检测是通过生成输入图像和其翻译的健康版本之间的差异图来执行的.
主要成果:
- 健康GAN显著优于传统的最先进的异常检测方法.
- 在COVID-19,NIH胸部X射线14和梅奥诊所数据集上表现出卓越的性能.
- 单向方法克服了使用未注释数据的循环一致性限制.
结论:
- HealthyGAN提供了一种有效的解决方案,用于无监督的异常检测,使用随时可用的未注释的医学图像数据.
- 该方法通过识别异常而提高诊断能力,而不需要专家注释.
- 这种方法具有显著的潜力,可以提高临床实践中疾病诊断的效率和准确性.
相关概念视频
Genome-wide Association Studies-GWAS
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
Brain Imaging
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).


