Fitzpatrick Institute for Photonics Fitzpatrick Institute for Photonics
Pratt School of Engineering
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Publications [#283756] of Qing H. Liu

Papers Published

  1. Song, J; Zhao, ZQ; Wang, JG; Zhu, XZ; Wu, JN; Liu, YL; Liu, QH, An image correction method based on elec-tromagnetic simulation for microwave in-duced thermo-acoustic tomography system, Progress in Electromagnetics Research B. Pier B, vol. 43 no. 43 (January, 2012), pp. 19-33, EMW Publishing, ISSN 1937-6472 [doi]
    (last updated on 2023/08/08)

    Abstract:
    In microwave induced thermo-acoustic tomography (MI-TAT) system, radiation of an antenna is a near -eld problem which gives rise to a non-uniform distribution of microwave radiation power in detection area. Due to this non-uniform distribution, the contrast of MITAT image which is proportional to the absorbed microwave en-ergy will not reoect the real characteristics (dielectric properties) of biological tissues. In this paper, an image correction method based on electromagnetic simulation is proposed to correct the image contrast a®ected by the non-uniform microwave radiation distribution. First, the distribution of the microwave radiation power is simulated through a numerical simulation framework. Conventional time-reversal mir-ror (TRM) technique is applied to reconstruct the image. Then the microwave power distribution is applied to correct the image. The method is numerically demonstrated. The two samples with the same microwave absorption property and with di®erent microwave absorp-tion properties are experimentally investigated. Both numerical simu-lations and experimental results demonstrate the good performance of the proposed method.


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