全光超声导管用于快速B模式食道成像
India Lewis-Thompson1,2, Edward Z Zhang1, Paul C Beard1,2
1Department of Medical Physics and Biomedical Engineering, University College London, Gower Street, London, WC1E 6BT, UK.
Biomedical optics express
|October 6, 2023
概括
全光学超声波 (OpUS) 成像使用光来产生和检测超声波. 一个新的OpUS导管为胃肠道应用提供了高分辨率,侧视B模式成像.
科学领域:
- 生物医学光学 生物医学光学
- 医疗成像医学成像
- 声学工程 声学工程
背景情况:
- 全光超声波 (OpUS) 成像技术正在出现,用于微创手术.
- 最近的进展使得"活体"应用成为可能.
研究的目的:
- 开发一种用于侧视B模式超声波的快速回撤成像导管.
- 评估其在上部胃肠道成像中的实用性.
主要方法:
- 该设备集成了一个超声波发射器和一个平面形微共振器来接收.
- 它从导管侧向产生超声波.
- 达到的超声压力> 1 MPa,带宽> 20 MHz.
主要成果:
- 实现了45微米 (轴) 和120微米 (侧面) 的成像分辨率.
- 记录了42dB的信号噪声比 (SNR).
- 猪食道的ex vivo成像显示了全厚分辨率和组织层可视化.
结论:
- OpUS成像探针显示了胃肠道中高分辨率诊断的潜力.
- 它可以提供快速指导,补充传统内镜.
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