使用生成对抗网络创建现实的前段光学连贯性断层扫描图像
Jad F Assaf1,2, Anthony Abou Mrad1, Dan Z Reinstein3,4,5,6,7
1Faculty of Medicine, American University of Beirut, Beirut, Lebanon.
The British journal of ophthalmology
|May 2, 2024
概括
生成对抗网络 (GAN) 创建现实的前段光学连贯断层扫描 (AS-OCT) 图像. 这些合成AS-OCT图像增强了用于眼睛成像分析的机器学习模型准确性.
科学领域:
- 眼科医生 眼科 眼科
- 人工智能的人工智能
- 医疗成像医学成像
背景情况:
- 前段光学连贯性断层扫描 (AS-OCT) 对于诊断眼部疾病至关重要.
- 生成高质量的合成AS-OCT图像可以帮助训练AI模型.
研究的目的:
- 开发一个生成对抗网络 (GAN),用于实现高分辨率的AS-OCT图像合成.
- 在机器学习任务中评估生成图像的实用性.
主要方法:
- 基于 A Style 和 WAvelet 的 GAN (SWaN-GAN) 在 142,628 个 AS-OCT B 扫描中受过训练.
- 图像的真实性是通过Fréchet发射距离 (FID) 和专家外科医生评估进行评估的.
- 一个卷积神经网络 (CNN) 用真实和合成数据进行了训练,用于分类.
- 增强的超分辨率GAN (ESRGAN) 用于高分辨率上采样.
主要成果:
- 生成的AS-OCT图像与真实图像具有很高的视觉和定量相似性 (FID: 6.32).
- 外科医生无法可靠地区分真实和生成的图像 (51.7%的准确性).
- 通过合成数据增强,CNN的准确性从78%提高到100%.
- 与双立方插值 (0.4244) 相比,ESRGAN上抽样产生了更好的结果 (LPIS:0.0905).
结论:
- GANs可以生成高清,现实的合成AS-OCT图像.
- 生成的图像适用于机器学习和图像分析中的增强数据集.
- 这种方法有可能推动人工智能驱动的眼科诊断.
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