3-D High Frequency Ultrasound Imaging by Piezo-Driving a Single-Element Transducer

He, Liyuan; Wang, Boquan; Wen, Zhiyi; Li, Xiaoniu; Wu, Dawei

doi:10.1109/tuffc.2022.3145162

Cited by 7 publications

(6 citation statements)

References 49 publications

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“…Test results showed that CMPCs-driven scanner requires a lower voltage and smaller size, especially in the axial dimension, to achieve comparable performance to the piezo tube-driven structure. The size of the piezo tube as actuator in Reference [ 4 ] is Φ7 × 35 mm; the size of the CMPCs parts in this work is only 5 mm × 5 mm × 13 mm, which is 22 mm shorter in axial dimensions in comparison. As the natural frequency increased, the vibration velocity increased and was subjected to increased damping force, which led to a decrease in amplitude.…”

Section: Experimental Testingmentioning

confidence: 96%

“…According to the driving method, optical scanners are primarily classified into mechanical, galvanometric, electronic, micro-electro–mechanical systems (MEMS), piezoelectric systems, etc. [ 1 , 2 , 3 , 4 , 5 ]. Currently, the most used mechanical optical scanners cannot easily meet the requirements of large angles, low errors, or high-speed scanning.…”

Section: Introductionmentioning

confidence: 99%

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Structural Design and Experimental Studies of Resonant Fiber Optic Scanner Driven by Co-Fired Multilayer Piezoelectric Ceramics

Wen

Wang

et al. 2023

Micromachines

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Piezo-driven resonant fiber optic scanners are gaining more and more attention due to their simple structure, weak electromagnetic radiation, and non-friction loss. Conventional piezo-driven resonant fiber optic scanners typically use quadrature piezoelectric tubes (piezo tubes) operating in 31-mode with high drive voltage and low excitation efficiency. In order to solve the abovementioned problem, a resonant fiber scanner driven by co-fired multilayer piezoelectric ceramics (CMPCs) is proposed in which four CMPCs drive a cantilevered fiber optic in the first-order bending mode to achieve efficient and fast space-filling scanning. In this paper, the cantilever beam vibration model with base displacement excitation was derived to provide a theoretical basis for the design of the fiber optic scanner. The finite element method was used to guide the dynamic design of the scanner. Finally, the dynamics characteristics and scanning trajectory of the prepared scanner prototype were tested and compared with the theoretical and simulation calculation results. Experimental results showed that the scanner can achieve three types of space-filling scanning: spiral, Lissajous, and propeller. Compared with the structure using piezo tubes, the designed scanner achieved the same scanning range with smaller axial dimensions, lower drive voltage, and higher efficiency. The scanner can achieve a free end displacement of 10 mm in both horizontal and vertical directions under a sinusoidal excitation signal of 50 Vp-p and 200 Hz. The theoretical, simulation and experimental results validate the feasibility of the proposed scanner structure and provide new ideas for the design of resonant fiber optic scanners.

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Section: Experimental Testingmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Structural Design and Experimental Studies of Resonant Fiber Optic Scanner Driven by Co-Fired Multilayer Piezoelectric Ceramics

Wen

Wang

et al. 2023

Micromachines

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“…PRI, which is the time interval between two adjacent emitting pulses, is normally fixed value and can be adjusted to change the spatial sampling rate. The smaller the PRI, the higher the spatial sampling rate [19]. However, reaching a sufficient spatial sampling rate with a smaller PRI does not continue to improve the ultrasound image quality, but rather causes an increase in data volume.…”

Section: Working Characteristicsmentioning

confidence: 99%

“…The center frequency, bandwidth and dynamic performance of the transducer prototype for ultrasound imaging were evaluated. The pulse-echo method was utilized to characterize the center frequency and bandwidth of the ultrasound transducer (see [19] for more details). According to the pulse-echo testing, the center frequency of the ultrasound transducer is The frequency-domain response measurement is to obtain the relationship between the scanner amplitude and the excitation signal frequency.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…High frequency ultrasound imaging experiments were carried out under the excitation of 104 Hz and 100 V p-p sinusoidal signals. The excitation signal of the transducer was set to 41.5 MHz, 1-cycle sine wave pulse signal, and the sampling rate of the received signal is 62.5 MHz, adopting the 4/3 sampling method [19]. 41.5 MHz is the maximum transmitting frequency of the Vantage 64LE system with high frequency configuration, which is within the −6 dB bandwidth of the transducer, according to the measurement result in figure 6.…”

Section: Ultrasound Imaging Systemmentioning

confidence: 99%

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Piezoelectric bimorph-driven ultrasound scanner for high frequency ultrasound imaging

Wen

Wang

et al. 2023

Meas. Sci. Technol.

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Ultrasound imaging commonly uses mechanical or electronic scanning methods. However, the mechanical scanning systems are bulky and susceptible to Electromagnetic Interference, while electronic scanning systems are complex and expensive. A more affordable and compact solution for high frequency preclinical and clinical imaging is single-element transducer based ultrasound imaging. This method offers high spatial resolution with low cost and low complexity. In this study, a novel single-element high frequency ultrasound imaging scanner was introduced. The scanner is based on piezoelectric bimorph drive and designed to be low-cost, compact, and handheld. Tungsten wire phantom imaging was performed on a dedicated ultrasound imaging system, and the obtained results were analyzed and compared. The results demonstrate that piezoelectric bimorph drive allows for high frequency imaging with a scanning speed of up to 208 frames per second. The image quality was higher than that of electromagnetic motor drive. The versatility of the ultrasound imaging system makes it suitable for preclinical and clinical applications, including small animal imaging, ophthalmic imaging, skin imaging, and intraoperative ultrasound imaging.

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3D high frequency ultrasound imaging using a miniature spiral scanner

Wen,

He,

Wang

et al. 2023

2023 IEEE International Ultrasonics Symposium (IUS)

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3-D High Frequency Ultrasound Imaging by Piezo-Driving a Single-Element Transducer

Cited by 7 publications

References 49 publications

Structural Design and Experimental Studies of Resonant Fiber Optic Scanner Driven by Co-Fired Multilayer Piezoelectric Ceramics

Structural Design and Experimental Studies of Resonant Fiber Optic Scanner Driven by Co-Fired Multilayer Piezoelectric Ceramics

Piezoelectric bimorph-driven ultrasound scanner for high frequency ultrasound imaging

3D high frequency ultrasound imaging using a miniature spiral scanner

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