Correspondence: Lead-free intravascular ultrasound transducer using BZT-50BCT ceramics

Xingwei Yan, Kwok Ho Lam, Xiang Li, Ruimin Chen, Wei Ren, Xiaobing Ren, Qifa Zhou, K. Kirk Shung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

43 Citations (Scopus)


This paper reports the fabrication and evaluation of a high-frequency ultrasonic transducer based on a new lead-free piezoelectric material for intravascular imaging application. Lead-free 0.5Ba(Zr0.2Ti0.8)O3¿0.5(Ba0.7Ca0.3) TiO4(BZT-50BCT) ceramic with a high dielectric constant (∼2800) was employed to develop a high-frequency (∼30 MHz) needletype ultrasonic transducer. With superior piezoelectric performance (piezoelectric coefficient d33∼ 600 pC/N), the lead-free transducer was found to exhibit a ¿6-dB bandwidth of 53% with an insertion loss of 18.7 dB. In vitro intravascular ultrasound (IVUS) imaging of a human cadaver coronary artery was performed to demonstrate the potential of the lead-free transducer for biomedical imaging applications. This is the first time that a lead-free transducer has been used for IVUS imaging application. The experimental results suggest that the BZT-50BCT ceramic is a promising lead-free piezoelectric material for high-frequency intravascular imaging applications.
Original languageEnglish
Article number6521078
Pages (from-to)1272-1276
Number of pages5
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Issue number6
Publication statusPublished - 14 Jun 2013
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering


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