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双探头跨骨全波形反转:一个大脑幻影可行性研究

Thomas Caradoc Robins1, Carlos Cueto1, Javier Cudeiro2

  • 1Department of Bioengineering, Faculty of Engineering, Imperial College London, London, UK.

Ultrasound in medicine & biology
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概括

全波形逆转 (FWI) 从超声数据成功地创建了高分辨率的二维大脑图像,克服了头骨扭曲. 这一进步显示了成年人经超声波成像的前景.

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科学领域:

  • 医疗成像医学成像
  • 声学建模 声学建模
  • 生物医学工程 生物医学工程

背景情况:

  • 超超声成像在成年人中是有限的,因为骨诱导的信号扭曲.
  • 全波形逆转 (FWI) 显示了通过头骨进行高质量的脑成像的潜力.
  • 低频超声波数据可以用于跨膜超声波断层扫描.

研究的目的:

  • 为了展示FWI的第一个实验应用,用于高分辨率的2D大脑和头骨超声波成像.
  • 通过使用幻影模型评估FWI的可行性,用于跨膜超声波断层扫描.
  • 在FWI重建中评估不同传感器阵列配置的有效性.

主要方法:

  • 使用了一个2:5尺度的大脑幻影,被包裹在一个3D打印的头骨模仿器中.
  • 实施了带有低频心脏探针的断层超声波采集系统.
  • 在实验获得的数据上进行了FWI重建,并与合成数据进行了比较.

主要成果:

  • 在骨模仿中成功地实现了脑幻体的FWI重建.
  • 应用了一种反射匹配算法来建模头骨层,减轻其影响.
  • 这项研究证明了用各种传感器阵列配置的成像系统的可行性.

结论:

  • 这项研究代表了FWI在成年人经超声波成像中的临床应用的重要一步.
  • FWI提供了一种有希望的方法来克服由头骨引起的信号退化.
  • 使用FWI与低频超声波,可以获得大脑的高分辨率声学模型.