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首页> 外文期刊>IEEE Transactions on Medical Imaging >Development of a Mechanical Scanning Device With High-Frequency Ultrasound Transducer for Ultrasonic Capsule Endoscopy
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Development of a Mechanical Scanning Device With High-Frequency Ultrasound Transducer for Ultrasonic Capsule Endoscopy

机译：超声胶囊内窥镜用高频超声换能器机械扫描装置的研制

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摘要

Wireless capsule endoscopy has opened a new era by enabling remote diagnostic assessment of the gastrointestinaltract in a painless procedure. Video capsule endoscopy is currently commercially available worldwide. However, it is limited to visualization of superficial tissue. Ultrasound (US) imaging is a complementary solution as it is capable of acquiring transmural information from the tissue wall. This paper presents a mechanical scanning device incorporating a high-frequency transducer specifically as a proof of concept for US capsule endoscopy (USCE), providing information that may usefully assist future research. A rotary solenoid-coil-based motor was employed to rotate the US transducer with sectional electronic control. A set of gears was used to convert the sectional rotation to circular rotation. A single-element focused US transducer with 39-MHz center frequency was used for high-resolution US imaging, connected to an imaging platform for pulse generation and image processing. Key parameters of US imaging for USCE applications were evaluated. Wire phantom imaging and tissue phantom imaging have been conducted to evaluate the performance of the proposed method. A porcine small intestine specimen was also used for imaging evaluation in vitro. Test results demonstrate that the proposed device and rotation mechanism are able to offer good image resolution ( ~60 μm) of the lumen wall, and they, therefore, offer a viable basis for the fabrication of a USCE device.
机译：无线胶囊内窥镜通过无痛操作实现对胃肠道的远程诊断评估，开创了一个新时代。视频胶囊内窥镜目前可在全球范围内购得。但是，它仅限于表浅组织的可视化。超声（US）成像是一种补充解决方案，因为它能够从组织壁获取透壁信息。本文提出了一种机械扫描设备，该设备结合了高频换能器，专门用于美国胶囊内窥镜检查（USCE）的概念验证，可提供有助于将来研究的信息。采用了基于旋转螺线管线圈的电动机，通过分段电子控制来旋转US传感器。使用一组齿轮将截面旋转转换为圆周旋转。具有39 MHz中心频率的单元素聚焦US换能器用于高分辨率US成像，并连接到成像平台以进行脉冲生成和图像处理。评估了USCE应用的美国成像的关键参数。导线幻影成像和组织幻影成像已进行，以评估该方法的性能。猪小肠标本也用于体外成像评估。测试结果表明，所提出的装置和旋转机构能够提供良好的内腔壁图像分辨率（〜60μm），因此它们为USCE装置的制造提供了可行的基础。

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  • 来源
    《IEEE Transactions on Medical Imaging》 |2017年第9期|1922-1929|共8页
  • 作者

    Xingying Wang; Vipin Seetohul; Ruimin Chen; Zhiqiang Zhang; Ming Qian; Zhehao Shi; Ge Yang; Peitian Mu; Congzhi Wang; Zhihong Huang; Qifa Zhou; Hairong Zheng; Sandy Cochran; Weibao Qiu;

  • 作者单位

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

    School of Engineering, University of Glasgow, Glasgow, U.K.;

    Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA;

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

    Institute for Medical Science and Technology, University of Dundee, Dundee, U.K.;

    Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA;

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

    School of Engineering, University of Glasgow, Glasgow, U.K.;

    Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;

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  • 正文语种 eng
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  • 关键词

    Imaging; Transducers; Endoscopes; Ultrasonic imaging; Gears; Field programmable gate arrays; Image resolution;

    机译：成像;传感器;内窥镜;超声成像;齿轮;现场可编程门阵列;图像分辨率;

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