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在基于LED的光声断层扫描系统中,EMI导致了对象的去除,以提高图像质量
Xinyu Lu1, Enxiang Shen1, Jie Yuan1
1School of Electronic Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.
Medical engineering & physics
|November 1, 2025
概括
在光声学计算机断层扫描 (PACT) 系统中,发光二极管 (LED) 的电磁干扰 (EMI) 会导致图像工件. 这项研究引入了基于LED的优化PACT设计,可以抑制EMI,显著减少这些工件,以获得更清晰的图像.
科学领域:
- 生物医学成像技术 生物医学成像技术
- 摄影声学 摄影声学
- 医疗器械 医疗器械 医疗器械
背景情况:
- 基于发光二极管 (LED) 的光声学计算机断层扫描 (PACT) 系统由于安全性,成本,便携性和波长可调性而具有优势.
- 高质量的光声信号需要由纳秒脉冲驱动的LED,这些LED会产生显著的电磁干扰 (EMI).
- 来自PACT系统中的LED的EMI会诱导超声传感器中的电流,通过与光声信号混合而产生人工物.
研究的目的:
- 为基于LED的PACT系统提出和验证一个优化的设计,以抑制EMI.
- 为了减少由LED驱动的PACT中电磁干扰引起的图像工件.
- 增强基于LED的PACT用于表面血管成像和光声内镜的应用性.
主要方法:
- 设计了专门的电路模块,以减轻来自LED的EMI产生.
- 将外部电磁波吸收技术纳入PACT系统设计中.
- 进行EMI测量和比较成像实验,以评估设计的有效性.
主要成果:
- 优化的基于LED的PACT系统设计显示了显著的EMI抑制.
- 在使用拟议设计的PACT系统中,图像文物被大幅减少.
- 实验结果证实了EMI降低策略的有效性.
结论:
- 开发的优化设计有效地抑制了基于LED的PACT系统中的EMI.
- 这种进步最大限度地减少了图像工件,从而提高了诊断质量.
- 优化的设计有望增强诸如血管成像和光声内镜等应用.
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