Endoscopic ultrasound radial arrays fabricated with high- performancepiezocrystal and piezocomposite

Dan Zhou, Jiyan Dai, Helen Lai Wa Chan, Jinchuan Wu, Henhui Cai, Haosu Luo, Sien Ting Lau, Chang Hong Hu, Qifa Zhou, Kirk K. Shung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

5 Citations (Scopus)

Abstract

In this work, we develop the fabrication process of the radial arraytransducers, which are used to combine the gastroscope for acquiring ultrasoundimages of the surrounding organs, tissues and vessels. The PMNPT piezocrystaland its 1-3 piezocomposite were used as the active elements, respectively. Highacoustic attenuation and flexibility composite material was used as the backinglayers. The matching layers were specially designed according to the acousticimpedance of array elements. The pulse-echo responses acquired in water tankshow that the PMNPT piezocrystal radial array transducer exhibits 80 % bandwidthand PMNPT/Epoxy 1-3 piezocomposite radial array transducer exhibits 100 %bandwidth, which has much broader bandwidth than commercial PZT arraytransducers (70 %). Thus, high resolution endoscopic ultrasonic images areexpected for many clinical applications.
Original languageEnglish
Title of host publication2010 IEEE International Ultrasonics Symposium, IUS 2010
Pages2068-2071
Number of pages4
DOIs
Publication statusPublished - 1 Dec 2010
Event2010 IEEE International Ultrasonics Symposium, IUS 2010 - San Diego, CA, United States
Duration: 11 Oct 201014 Oct 2010

Conference

Conference2010 IEEE International Ultrasonics Symposium, IUS 2010
CountryUnited States
CitySan Diego, CA
Period11/10/1014/10/10

Keywords

  • 1-3 piezocomposite
  • endoscopic ultrasound
  • PMNPT piezocrystal
  • PZTpiezoceramic
  • radial array transducer

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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