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Weiyan D, Chen X, Zhang Y, Li X, Sun F, Yang Z, Tang X, Zhou C, Wang F, Zhao X. High Frequency Ultrasound Transducer Based on Sm-Doped Pb(Mg 1/3Nb 2/3)O 3-0.28PbTiO 3 Ceramic for Intravascular Ultrasound Imaging. ULTRASONIC IMAGING 2024:1617346241271119. [PMID: 39189365 DOI: 10.1177/01617346241271119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Sm-doped Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 (PMN-0.28PT) ceramic has been reported to exhibit very large piezoelectric response (d33~1300 pC/N) that can be comparable with PMN-0.30PT single crystal. Based on the Sm-doped PMN-0.28PT ceramics, a high frequency ultrasound transducer with the center frequency above 30 MHz has been designed and fabricated for intravascular ultrasound imaging, and the performance of the transducer was investigated via ultrasound pulse-echo tests. Further, for a porcine vessel wall, the 2D and 3D ultrasound images were constructed using signal acquisition and processing from the fabricated high-frequency transducer. The obtained details of the vessel wall by the IVUS transducer indicate that Sm-doped PMN-0.28PT ceramic is a promising candidate for high frequency transducers.
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Affiliation(s)
- Ding Weiyan
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Xingfei Chen
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Yongcheng Zhang
- School of Physics, University-Industry Joint Center for Ocean Observation and Broadband Communication, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao, China
| | - Xiaobing Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Fenglong Sun
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Zhaoping Yang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Xi Tang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Changjiang Zhou
- Department of sonography, People's Hospital Affiliated to Shandong First Medical University, Shandong, China
| | - Feifei Wang
- Key Laboratory of Optoelectronic Material and Device, Department of Physics, Shanghai Normal University, Shanghai, China
| | - Xiangyong Zhao
- Key Laboratory of Optoelectronic Material and Device, Department of Physics, Shanghai Normal University, Shanghai, China
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Liang S, Su M, Liu B, Liu R, Zheng H, Qiu W, Zhang Z. Evaluation of Blood Induced Influence for High-Definition Intravascular Ultrasound (HD-IVUS). IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2022; 69:98-105. [PMID: 34437062 DOI: 10.1109/tuffc.2021.3108163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
High-definition intravascular ultrasound (HD-IVUS) utilizing more than 80 MHz frequency to assess atherosclerotic plaque, can theoretically achieve an axial resolution of less than [Formula: see text]. However, the blood is a high-attenuation source at high frequency, which would affect the imaging quality. There has been no research evaluating the blood-induced influence on HD-IVUS imaging. And whether a temporary removal of blood is needed for HD-IVUS is unknown. In this study, an ultrahigh-frequency (100 MHz) ultrasound transducer was developed to evaluate the blood-induced attenuation for HD-IVUS imaging. A series of tungsten-wire phantom images in saline and blood at varying hematocrits were obtained. The images showed that blood did influence the ultrahigh-frequency imaging quality greatly. The signal-to-noise ratio (SNR) decrease by 71.7% in porcine whole blood compared to that in saline at the same depth of 2.3 mm. Moreover, the potential flushing schemes for HD-IVUS were studied in varying hematocrits. Three flushing agents commonly used in intravascular optical coherence tomography (IV-OCT) were investigated, including iohexol, mannitol, and dextran 5% and saline as the control group. The attenuation of blood in varying hematocrits/flushing agents was measured from 90 to 110 MHz. The result indicated dextran 5% was a suitable flushing agent for HD-IVUS due to its less signal attenuation compared to others.
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Abstract
Numerous investigations on the development of the relaxor-PbTiO3 ferroelectric crystals have been carried out since their extraordinary properties were revealed. Recent developments on these crystals have offered further advances in electromechanical applications. In this review, recent developments on relaxor-PbTiO3 crystals and their practical applications are reviewed. The single crystal growth methods are first discussed. Two different strategies, poling and doping, for piezoelectric improvement are surveyed in the following section. After this, the anisotropic features of the single crystals are discussed. Application perspectives arising from the property improvements for electromechanical devices are finally reviewed.
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Zhang Q, Pang X, Zhang Z, Su M, Hong J, Zheng H, Qiu W, Lam KH. Miniature Transducer Using PNN-PZT-based Ceramic for Intravascular Ultrasound. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2019; 66:1102-1109. [PMID: 30908214 DOI: 10.1109/tuffc.2019.2906652] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, the development and performance evaluation of a high-frequency miniature ultrasonic transducer based on a Pb(Ni1/3Nb2/3)O3-Pb(Zr0.3Ti0.7)O3 (PNN-PZT-based) ceramic for intravascular imaging application are reported. The fabricated PNN-PZT-based ceramic possesses ultrahigh relative clamped dielectric permittivity (.S/.0 = 3409) and high electromechanical coupling capability (kt = 0.60). A 42-MHz high-frequency side-looking ultrasonic transducer probe using the PNN-PZT-based ceramic with a miniature aperture of 0.33 mm × 0.33 mm was designed and fabricated, which exhibited a wide -6 dB bandwidth of 79% and an insertion loss of -19.6 dB. High spatial resolution, including the axial resolution of 36 μm and lateral resolution of 141 μm, was determined by imaging a 13-μm tungsten wire phantom. Ex vivo intravascular ultrasound (IVUS) imaging of a porcine coronary artery was performed to show the imaging capability of the miniature transducer. The results demonstrated the great potential of PNN-PZT-based ceramic for high-resolution miniature transducers application.
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Nguyen TP, Truong NTP, Bui NQ, Nguyen VT, Hoang G, Choi J, Phan TTV, Pham VH, Kim BG, Oh J. Design, Fabrication, and Evaluation of Multifocal Point Transducer for High-Frequency Ultrasound Applications. SENSORS (BASEL, SWITZERLAND) 2019; 19:E609. [PMID: 30717095 PMCID: PMC6386936 DOI: 10.3390/s19030609] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 12/30/2022]
Abstract
The present study illustrates the design, fabrication, and evaluation of a novel multifocal point (MFP) transducer based on polyvinylidene fluoride (PVDF) film for high-frequency ultrasound application. The fabricated MFP surface was press-focused using a computer numerical control (CNC) machining tool-customized multi-spherical pattern object. The multi-spherical pattern has five spherical surfaces with equal area and connected continuously to have the same energy level at focal points. Center points of these spheres are distributed in a linear pattern with 1 mm distance between each two points. The radius of these spheres increases steadily from 10 mm to 13.86 mm. The designed MFP transducer had a center frequency of 50 MHz and a -6 dB bandwidth of 68%. The wire phantom test was conducted to study and demonstrate the advantages of this novel design. The obtained results for MFP transducer revealed a significant increase (4.3 mm) of total focal zone in the near-field and far-field area compared with 0.48 mm obtained using the conventional single focal point transducer. Hence, the proposed method is promising to fabricate MFP transducers for deeper imaging depth applications.
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Affiliation(s)
- Thanh Phuoc Nguyen
- Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering, Pukyong National University, Busan 48513, Korea.
- Center for Marine-Integrated Biomedical Technology, Pukyong National University, Busan 48513, Korea.
| | - Nguyen Thanh Phong Truong
- Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering, Pukyong National University, Busan 48513, Korea.
| | - Nhat Quang Bui
- Center for Marine-Integrated Biomedical Technology, Pukyong National University, Busan 48513, Korea.
| | - Van Tu Nguyen
- Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering, Pukyong National University, Busan 48513, Korea.
| | - Giang Hoang
- Center for Marine-Integrated Biomedical Technology, Pukyong National University, Busan 48513, Korea.
| | - Jaeyeop Choi
- Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering, Pukyong National University, Busan 48513, Korea.
| | - Thi Tuong Vy Phan
- Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering, Pukyong National University, Busan 48513, Korea.
- Center for Marine-Integrated Biomedical Technology, Pukyong National University, Busan 48513, Korea.
| | - Van Hiep Pham
- Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering, Pukyong National University, Busan 48513, Korea.
| | - Byung-Gak Kim
- College of Future Convergence, Pukyong National University, Busan 48513, Korea.
| | - Junghwan Oh
- Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering, Pukyong National University, Busan 48513, Korea.
- Center for Marine-Integrated Biomedical Technology, Pukyong National University, Busan 48513, Korea.
- Department of Biomedical Engineering, Pukyong National University, Busan 48513, Korea.
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