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多光束最小偏差光束形成用于环阵列超声波成像.

Hao Zhang1, Yunhao Zhu2, Bowen Zhou1

  • 1School of Engineering Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.

Physics in medicine and biology
|June 9, 2023
PubMed
概括

这种新型的多束最小方差 (MB-MV) 束造波器显著提高了环阵列中的超声波图像质量. 这种先进的方法提高了分辨率和对比度,有助于检测病变.

关键词:
梁造型 梁造型 梁造型 梁造型医学超声波成像医学超声波成像最小偏差光束成形光束的形成环形阵列传感器的转换器

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科学领域:

  • 医疗成像医学成像
  • 超声波技术 超声波技术 超声波技术
  • 信号处理 信号处理

背景情况:

  • 延迟和总和 (DAS) 和最小方差 (MV) 是超声波束形成的关键因素.
  • 通过减少干扰,MV光束造型器提供更优质的图像质量.
  • 线性阵列的视野有限;环形阵列的覆盖范围更广,但探索较少.

研究的目的:

  • 引入和评估用于环阵列超声成像的多束最小方差 (MB-MV) 束变量器.
  • 在环阵列系统中增强图像质量,分辨率和对比度.
  • 为了比较MB-MV光束变压器与DAS和空间平滑MV (SS MV) 方法.

主要方法:

  • 多光束最小偏差 (MB-MV) 光束变压器的开发.
  • 使用模拟,幻影实验和体内人类研究进行比较分析.
  • 评估指标包括半最大全宽度 (FWHM) 和对比率.

主要成果:

  • 与DAS和SS MV相比,MB-MV在FWHM中实现了超过50%的改进.
  • MB-MV对DAS的对比度提高了约6dB,对SS MV的对比度提高了4dB.
  • 在环阵超声成像中证明了MB-MV在环阵超声成像中的卓越性能.

结论:

  • MB-MV 波束造型器对于环阵列超声波成像是可行的和有效的.
  • MB-MV显著提高了图像质量,提供了更好的病变差异化.
  • 这种方法有可能推进环阵超声波的临床应用.