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Updated: Oct 10, 2025
Three-dimensional Optical-resolution Photoacoustic Microscopy
Published on: May 3, 2011
Development of a Compact Photoacoustic Tomography Imaging System with Dual Single-Element Transducers for Image
Yong-Jian Zhao1,2, Xiao-Long Zhu1, Pei-Yu Luo1
1Department of Electronic and Electrical Engineering, the Southern University of Science and Technology, Shenzhen, 518055, China.
Objective:
This paper proposes a new photoacoustic computed tomography (PACT) imaging system employing dual ultrasonic transducers with different frequencies. When 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 quality.
Methods:
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 signals. In this study, a series of numerical simulation and phantom experiments were performed to validate the efficacy of the developed PACT system.
Results:
The images generated by our system combined the advantages of both high resolution and ideal brightness/contrast.
Conclusion:
The interchangeability of transducers with different frequencies provides potential for clinical deployment under the circumstance where a single frequency transducer cannot perform well.
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