一个用于超高频 (>100 MHz) 超声波应用的新型编码激发成像平台
IEEE transactions on bio-medical engineering
|March 3, 2025
概括
这项研究引入了一种新的编码激发成像平台,用于超高频 (UHF) 超声波. 该平台增强了透深度和信号噪声比,这对于高分辨率医学成像至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 医疗成像医学成像
- 超声波技术 超声波技术 超声波技术
背景情况:
- 超高频 (UHF) 超声波 (>100 MHz) 为表面组织提供高分辨率成像,但由于声学衰减,其透深度有限.
- 提高透深度对于超高频超声波的临床应用至关重要.
- 编码激发是一种已知的技术,可以提高高频超声波的透率,但其在超高频范围内的可行性和实际系统实施仍未得到充分探索.
研究的目的:
- 开发和验证一个专门为UHF超声波应用设计的新型编码激发成像平台.
- 为了解决传统的超高频超声波系统的局限性,如体积,高成本和不灵活性.
- 为了证明编码激发在提高超高频超声波的透深度和图像质量的有效性.
主要方法:
- 开发一个集成的超高频超声波成像平台,其中包括一个高性能发射器和一个高采样率接收器.
- 使用酸 (LiNbO3) 制造的超高频超声波传感器,中心频率为121.5MHz.
- 实施和测试编码激发技术,包括高压短脉冲和声编码脉冲,用于UHF超声波成像.
主要成果:
- 拟议的编码激发方法显著提高了信号噪声比 (SNR) 约10dB.
- 保持了高空间分辨率,同时实现了更高的透深度.
- 使用定制开发的超高频传感器验证平台的成像性能.
结论:
- 开发的编码激发成像平台对UHF超声波应用非常有效.
- 这项技术在超高频超声波成像中克服透深度限制方面显示出显著的前景.
- 该平台为临床环境中的高分辨率超高频超声波成像提供了一种灵活且可能更容易获得的解决方案.
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