Miniature transducer using PNN-PZT-based ceramic for intravascular ultrasound

Zhang, Q., Pang, X., Zhang, Z., Su, M., Hong, J., Zheng, H., Qiu, W. and Lam, K. H. (2019) Miniature transducer using PNN-PZT-based ceramic for intravascular ultrasound. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 66(6), pp. 1102-1109. (doi: 10.1109/TUFFC.2019.2906652) (PMID:30908214)

Abstract

In this work, the development and performance evaluation of a high-frequency miniature ultrasonic transducer based on a Pb(Ni 1/3 Nb 2/3 )O 3 -Pb(Zr 0.3 Ti 0.7 )O 3 (PNN-PZT-based) ceramic for intravascular imaging application are reported. The fabricated PNN-PZT-based ceramic possesses ultrahigh relative clamped dielectric permittivity (ε s /ε 0 = 3409 and high electromechanical coupling capability (k t = 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 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 cm and the lateral resolution of 141μm, 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 the PNN-PZT-based ceramic for high-resolution miniature transducers application.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Lam, Dr Koko
• Authors: Zhang, Q., Pang, X., Zhang, Z., Su, M., Hong, J., Zheng, H., Qiu, W., and Lam, K. H.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
• Publisher: Institute of Electrical and Electronics Engineers
• ISSN: 0885-3010
• ISSN (Online): 1525-8955

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