频域全波形反向式肌肉骨超声波计算机断层扫描
Chenchen Zhou1, Kailiang Xu1, Dean Ta1
1Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai, China.
The Journal of the Acoustical Society of America
|July 14, 2023
概括
频域全波形逆转 (FDFWI) 为肌肉骨成像提供了高效的超声波计算机断层扫描 (USCT). 新的方法改善了来源估计和收,使骨和病变的准确成像成为可能.
科学领域:
- 医疗成像医学成像
- 生物医学工程 生物医学工程
- 计算物理 计算物理
背景情况:
- 全波形逆转 (FWI) 是一种强大的超声波计算机断层扫描 (USCT) 工具.
- 时间域FWI (TDFWI) 面临着计算方面的挑战.
- 频域FWI (FDFWI) 为成像提供了更好的计算效率.
研究的目的:
- 开发一种有效的来源估计方法,用于肌肉骨FDFWI.
- 解决成像组织具有高阻抗对比度的挑战,如骨.
- 提高FDFWI在肌肉骨应用中的趋同性和准确性.
主要方法:
- 建议使用水参考数据校准方法来估计来源.
- 引入了一个起始频率标准,以防止局部最小值,并改善趋同.
- 在腿部模型上进行了数值研究,这些腿部模型具有不同的肌肉骨结构和病变.
主要成果:
- 拟议的以水为参考的校准方法有效地解决了在骨头存在时源估计的挑战.
- 起始频率标准促进了算法收,并避免了周期跳转.
- 数字模拟成功证明了肌肉骨解剖学和病变的检索.
结论:
- 这项研究成功地将FDFWI扩展到肌肉骨USCT成像.
- 提出的方法为肌肉骨成像提供了有效和准确的解决方案.
- 这项工作为高分辨率的肌肉骨USCT提供了可行的替代方案.
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