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Development of a Compact Photoacoustic Tomography Imaging System with Dual Single-Element Transducers for Image Enhancement

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Current Medical Science 2021年第6期41卷 1151-1157页

作者： Yong-jian ZHAO Xiao-long ZHU Pei-yu LUO Ang LI Wei XIAO Xiao XIAO Li LIU Max Q.-H.MENG Department of Electronic and Electrical Engineering the Southern University of Science and TechnologyShenzhen 518055China Department of Electronic Engineering The Chinese University of Hong KongHong Kong 999077China Shenzhen Research Institute of The Chinese University of Hong Kong in Shenzhen Shenzhen 518172China

Objective:This paper proposes a new photoacoustic computed tomography(PACT)imaging system employing dual ultrasonic transducers with different *** imaging complex biological tissues,photoacoustic(PA)signals with multiple frequencies are produced simultaneously;however,due to the limited bandwidth of a single-frequency transducer,the received PA signals with specific frequencies may be missing,leading to a low imaging ***:In contrast to our previous work,the proposed system has a compact volume as well as specific selection of the detection center frequency of the transducer,which can provide a comprehensive range for the detection of PA *** this study,a series of numerical simulation and phantom experiments were performed to validate the efficacy of the developed PACT ***:The images generated by our system combined the advantages of both high resolution and ideal brightness/***:The interchangeability of transducers with different frequencies provides potential for clinical deployment under the circumstance where a single frequency transducer cannot perform well.

关键词： photoacoustic tomography dual transducers image enhancement signal responding range

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