深度连贯学习:无监督的深波变频器用于医疗超声波中高质量的单平面波形象成像
Hyunwoo Cho1, Seongjun Park1, Jinbum Kang2
1Department of Electronic Engineering, Sogang University, Seoul 04107, South Korea.
Ultrasonics
|August 2, 2024
概括
本研究介绍了深度连贯学习 (DCL),这是一种无监督的深度学习方法,用于超声波中高质量的单平面波成像 (PWI). DL-DCL实现了可比的空间分辨率和优越的对比分辨率,克服了基于DL的PWI方法的局限性.
科学领域:
- 医学超声波成像医学超声波成像
- 深度学习应用程序
- 信号处理 信号处理
背景情况:
- 平面波成像 (PWI) 提供高率,但面临着传统多传输方法的挑战.
- 针对单个PWI的深度学习 (DL) 方法旨在提高率,但由于缺乏基础真相数据而受到阻碍.
- 由于数据限制,PWI的现有DL方法在性能改进方面遇到了困难.
研究的目的:
- 提出一种新的无监督学习方法,即基于深度连贯学习 (DCL) 的DL光束转换器 (DL-DCL),用于高质量的单个PWI.
- 通过使用无监督的DL框架,从低质量的单个PWI数据中实现高质量的PWI.
- 开发一种适用于复杂基带信号的通用光束变频器.
主要方法:
- 开发了一个DL-DCL框架,利用一个独特的损失函数来训练DL网络来预测高度相关的信号.
- 在DL-DCL框架内使用复杂的基带信号来创建一个通用光束转换器.
- 通过模拟,幻影和体内研究验证DL-DCL性能,将其与传统光束造型器 (DAS,DMAS) 和其他DL方法 (监督学习,GAN) 进行比较.
主要成果:
- DL-DCL的空间分辨率与传统的DAS (75-PWs) 和DMAS (1-PW) 方法相提并论.
- 拟议的DL-DCL在对比分辨率方面显著超过了所有比较方法.
- 无监督学习方法有效地解决了基于DL的传统PWI的局限性,显示了最小的文物.
结论:
- DL-DCL框架为高质量的单个PWI提供了一个有前途的无监督学习解决方案.
- DL-DCL实现了出色的图像质量,特别是对比分辨率,而不需要地面真相数据.
- 这种方法在医学超声波成像中具有显著的临床应用潜力.
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