Abstract
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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Conflict of Interest Statement
The authors declare that they have no conflicts of interest.
This research was supported by National Key R&D program of China (No. 2019YFB1312400), Hong Kong Health and Medical Research Fund (HMRF) (No. 06171066), and CUHK-Direct (No. 134997202).
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Zhao, Yj., Zhu, Xl., Luo, Py. et al. Development of a Compact Photoacoustic Tomography Imaging System with Dual Single-Element Transducers for Image Enhancement. CURR MED SCI 41, 1151–1157 (2021). https://doi.org/10.1007/s11596-021-2482-3
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DOI: https://doi.org/10.1007/s11596-021-2482-3