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相关概念视频

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
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像素响应优化光束成形方法用于超声波横成像.

Junyi Wang1, Tianhua Zhou1, Gaobo Zhang1

  • 1College of Biomedical Engineering, Fudan University, Shanghai, 200433, China.

Medical image analysis
|August 19, 2025
PubMed
概括

一种新的Pixel-Responsive Optimization (PRO) 波束成形方法通过纠正骨引起的波浪扭曲来改善跨超声成像. 这项技术增强了图像分辨率和信号恢复,通过骨进行更清晰的大脑成像.

关键词:
梁成形方法 梁成形方法阶段扭曲 阶段扭曲散射介质是一种散射介质.超声波超镜成像 超声波超镜成像

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科学领域:

  • 医疗成像医学成像
  • 声学 声学 在声学方面
  • 生物医学工程 生物医学工程

背景情况:

  • 头骨骨显著扭曲声波,挑战跨膜超声波成像.
  • 传统的延迟和总和 (DAS) 算法由于它们的像素独立处理而与头骨诱导的误差作斗争.
  • 精确的超声波通过骨头传播对于有效的脑部成像至关重要.

研究的目的:

  • 开发一种先进的光束成形方法,以克服超声波成像中由骨头引起的声学扭曲.
  • 为了提高图像分辨率和信号恢复在横超声应用.
  • 通过头骨为体内脑部成像提供一种可通用的解决方案.

主要方法:

  • 提出了一种使用复合平面波反散的像素响应优化 (PRO) 波束成形方法.
  • 构建了一个像素响应矩阵,并模拟了一个虚拟声学镜头来调整扭曲的波场.
  • 在牛大腿骨和人类头骨样本上测试了PRO方法.

主要成果:

  • PRO在图像分辨率和潜水信号的恢复方面取得了显著的改进.
  • 与DAS相比,在半最大时全宽度 (FWHM) 实现了高达90%的改进.
  • 在复杂的骨穿透场景中展示了文物抑制和强大的概括性.

结论:

  • PRO光束成形方法有效地纠正了骨中的声波扭曲.
  • PRO提供了一个有前途的进步,用于体内经脑部成像.
  • 这种技术提高了超声波通过头骨进行神经诊断的可行性.