探测器频带对光声成像分辨率的影响研究

谭毅, 黄新民, 任亚杰

谭毅, 黄新民, 任亚杰. 探测器频带对光声成像分辨率的影响研究[J]. 应用光学, 2011, 32(5): 831-834.
引用本文: 谭毅, 黄新民, 任亚杰. 探测器频带对光声成像分辨率的影响研究[J]. 应用光学, 2011, 32(5): 831-834.
shu
TAN Yi, HUANG Xin-min, REN Ya-jie. Influence of transducer bandwidth on photo-acoustic imaging resolution[J]. Journal of Applied Optics, 2011, 32(5): 831-834.
Citation: TAN Yi, HUANG Xin-min, REN Ya-jie. Influence of transducer bandwidth on photo-acoustic imaging resolution[J]. Journal of Applied Optics, 2011, 32(5): 831-834.
shu

探测器频带对光声成像分辨率的影响研究

  • 陕西理工学院物理系,陕西汉中723003

详细信息
    通讯作者:

    谭毅（1975-），男,湖南衡阳人，光学硕士，讲师，主要究从事光声层析成像在医学中的应用研究工作。

  • 中图分类号: TN20；Q334

Influence of transducer bandwidth on photo-acoustic imaging resolution

  • Department of Physics,Shaanxi University of Technology,Hanzhong 723003,China

摘要

    摘要
  • 摘要: 为了研究探测器频带对光声成像分辨率的影响，采用有限元仿真实验，得出不同探测器频带与分辨率之间的经验公式，即对于mm量级的吸收体，探测器的截止频率大于2 MHz时，重建图像分辨率变化不明显，当探测器的截止频率小于2 MHz时，分辨率降低非常明显。该研究结果对光声成像探测器的选择、成像效果评估具有参考价值。
    Abstract: In order to research the influence of different bandwidths of transducer on photo-acoustic imaging resolution, finite element simulation experiments were carried out. An empirical formula was obtained between transducer bandwidth and photo-acoustic imaging resolution. Experimental results showed that the reconstructed image resolution of absorbers was unchanged in the order of millimeters when the cut-off frequency of transducer was greater than 2 MHz; however, it was contrary for the frequency less than 2 MHz. The results are helpful for the choice of transducer and the evaluation of image reconstruction.
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  • 刊出日期:  2011-09-14

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