硬件独立的深度信号处理:心声回声仪的可行性研究
概括
深度学习模型可以复制超声波信号处理链,改善图像质量并实现可移植性. 这种方法显示了在不同的探测器和系统中实现成本效益的潜力.
科学领域:
- 医疗成像医学成像
- 人工智能的人工智能
- 超声波技术 超声波技术 超声波技术
背景情况:
- 传统的超声波 (US) 信号处理是复杂的,并且依赖于硬件.
- 深度学习 (DL) 为信号处理提供了一个潜在的替代方案,承诺减少推断时间和硬件可移植性.
- 美国现有的DL模型往往专注于特定的任务,而不是复制整个处理链.
研究的目的:
- 开发和评估一个DL模型,复制一个高端美国系统的BMode信号处理链.
- 用不同的探测器和在低端美国系统上评估模型的性能.
- 探索将先进的美国功能转移到不那么复杂的硬件的潜力.
主要方法:
- 一个深度神经网络 (DNN) 使用监督学习进行训练,将原始的相位和方位数据映射到处理的美国图像中.
- 训练数据集包括来自GE HealthCare Vivid E95系统的30,000个心脏图像框架.
- DL模型复制了关键的处理步骤,包括过,复合和压缩.
主要成果:
- 轻量级的DL模型准确地复制了商业扫描仪的信号处理链.
- 在测试数据集上,达到了98.56 ± 0.49的结构相似度指数 (SSIM).
- 当DL模型应用于来自不同探头的数据时,它显示了同等或更好的图像质量.
- 当应用到Verasonics数据集时,观察到更好的图像质量,这表明将功能移植到低端系统的潜力.
结论:
- 单个DL模型可以有效地复制高端美国系统的BMode处理链,用于特定的应用.
- 对于美国供应商来说,DL模型显示出具有成本效益的调整和实施策略的前景.
- 开发的DL模型有助于将先进的美国成像能力转移到低端系统,从而提高了可访问性和性能.
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