改善心脏功能评估:开发和验证用于自动化回声心脏图片细分的领域适应性框架
Mojdeh Nazari1, Hassan Emami2, Reza Rabiei2
1Department of Health Information Technology and Management, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Cardiovascular Diseases Research Center, Department of Cardiology, Heshmat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
概括
这项研究引入了用于心声图像的新领域适应细分框架,改善了心脏功能评估. 该模型有效处理域差异和噪音数据,为临床应用提供可靠的工具.
科学领域:
- 医学成像分析
- 心脏病学中的深度学习
- 图像分割技术
背景情况:
- 精确的心声图像细分对于心脏功能评估至关重要,包括射出分数计算.
- 由于域差异,噪音数据和解剖学变异性,深度学习模型面临着回声心脏学方面的挑战.
- 现有的方法难以应对不同的成像条件和模式.
研究的目的:
- 提出和验证自动回声心脏图像细分的域自适应细分框架.
- 在各种成像条件和模式中增强细分模型的稳定性.
- 解决心脏图像分析当前深度学习方法的局限性.
主要方法:
- 用于结构化隐藏表示的变量自编码器 (VAE) 和用于域对齐的瓦瑟斯坦GAN (WGAN) 的集成.
- 利用深度可分离的卷积来提高计算效率,并使用PixelShuffle层来实现高分辨率的重建.
- 在多个数据集 (CAMUS,EchoNet-Dynamic,Heshmat医院) 上使用子得分,雅卡德指数和豪斯多夫距离进行评估,并进行了心脏病学家的定性评估.
主要成果:
- 获得优异的子分数:84.6% (CAMUS → EchoNet-Dynamic) 和89.1% (EchoNet-Dynamic → CAMUS),超过了最先进的无监督域调整 (UDA) 方法.
- 在外部本地数据集 (赫什马特医院) 上保持强的表现,Dice分数为83.0%和84.1%.
- 与基线方法相比,所有结果都具有统计意义 (p < 0. 01).
结论:
- 拟议的UDA框架通过有效处理域差异,噪音数据和解剖学变异性,显著推进了回声心脏学细分.
- 这种强有力的框架为改善心脏健康评估提供了可靠的工具.
- 这项研究突显了临床心脏病学中自动化准确细分的潜力.
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