...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Physics Letters >High frequency focal transducer with a Fresnel zone plate for intravascular ultrasound
【24h】

High frequency focal transducer with a Fresnel zone plate for intravascular ultrasound

机译：具有脊髓内超声的菲涅耳区板的高频焦换能器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The diameter of an intravascular ultrasound (IVUS) catheter is always less than 1 mm, because it must be inserted into a blood vessel to obtain ultrasound images. Owing to this requisite small size, it is difficult to perform geometric focusing on the surface of an IVUS transducer to improve the spatial resolution of the image. This study proposes a high frequency transducer with a Fresnel zone plate (FZP) for intravascular ultrasound imaging. Through theoretical calculations, the parameters and structure of the transducer are optimized for high-frequency ultrasound. The acoustic beam is simulated using COMSOL software. The aperture size of the ultrasound element is 0.778 × 0.9 mm~2. Transducers with or without the FZP layer are designed and fabricated in this study. The center frequency and -6 dB bandwidth of the FZP transducer are 52.5 MHz and 42%, respectively. Meanwhile, the center frequency and -6 dB bandwidth of the plane-shape transducer are 51.3 MHz and 58%, respectively. Wire phantom and porcine artery imaging experiments were performed to evaluate the performance of the designed transducers. The spatial resolution of the FZP transducer is 46.8 μm axially and 183.6 μm laterally, and the resolution of the plane-shape transducer is 44.3 μm axially and 313.5μm laterally. The results demonstrate that the FZP transducer provides superior lateral imaging resolution for IVUS applications.
机译：血管内超声（IVUS）导管的直径总是小于1mm，因为必须插入血管中以获得超声图像。由于这一必要的小尺寸，很难在IVUS换能器的表面上执行几何，以改善图像的空间分辨率。该研究提出了一种具有用于血管内超声成像的菲涅耳区板（FZP）的高频换能器。通过理论计算，换能器的参数和结构针对高频超声进行了优化。声学光束使用COMSOL软件进行模拟。超声元件的光圈尺寸为0.778×0.9 mm〜2。在本研究中设计和制造有或没有FZP层的传感器。 FZP换能器的中心频率和-6 dB带宽分别为52.5MHz和42％。同时，平面换能器的中心频率和-6 dB带宽分别为51.3MHz和58％。进行线幻影和猪动脉成像实验以评估设计的换能器的性能。 FZP换能器的空间分辨率轴向轴向46.8μm，横向为183.6μm，平面换能器的分辨率轴向轴向44.3μm，横向313.5μm。结果表明，FZP换能器为IVUS应用提供卓越的横向成像分辨率。

著录项

  • 来源
    《Applied Physics Letters》 |2021年第14期|143702.1-143702.6|共6页
  • 作者

    Min Su; Xiangxiang Xia; Baoqiang Liu; Zhiqiang Zhang; Rong Liu; Feiyan Cai; Weibao Qiu; Lei Sun;

  • 作者单位

    Department of Biomedical Engineering The Hong Kong Polytechnic University Hong Kong 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 Shenzhen College of Advanced Technology University of 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 Shenzhen Key Laboratory of Ultrasound Imaging and Therapy Shenzhen China;

    Department of Biomedical Engineering The Hong Kong Polytechnic University Hong Kong China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号