A Custom-Made Linear Array Transducer for Photoacoustic Breast Imaging

Wenfeng Xia, Daniele Piras, Michelle Heijblom, Johan van Hespen, Spiridon van Veldhoven, Christian Prins, Ton G. van Leeuwen, Wiendelt Steenbergen, Srirang Manohar

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

A custom-made first prototype of a linear array ultrasound transducer for breast imaging is presented. Large active area transducer elements (5 mm × 5 mm) with 1 MHz resonance frequency are chosen to obtain a relatively high sensitivity. Acoustic lenses are used to enlarge the narrow acceptance angle of such transducer elements. The minimum detectable pressure, frequency bandwidth and electrical impedance of the transducer elements are characterized. The results show the transducer has a minimum detectable pressure of 0.8 Pa, which is superior than the transducers used in the Twente Photoacoustic Mammoscope system previously developed in our group. The bandwidth of the transducer is relative small, however it can be improved when using optimized matching layer thickness in future. We also observed a strong lateral resonance at 330 kHz, which may cause problems in various aspects for a photoacoustic imaging system. We discuss the future improvement and plans for the transducer optimizations.
Original languageEnglish
Title of host publicationPhotons Plus Ultrasound: Imaging and Sensing 2012
Subtitle of host publication22–24 January 2012 San Francisco, California, United States
EditorsAlexander A. Oraevsky, Lihong V. Wang
Place of PublicationBellingham, WA
PublisherSPIE
Number of pages6
ISBN (Print)9780819488664
DOIs
Publication statusPublished - 23 Jan 2012
EventPhotons Plus Ultrasound: Imaging and Sensing, SPIE BiOS 2012 - San Francisco, United States
Duration: 22 Jan 201224 Jan 2012

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume8223
ISSN (Print)0277-786X

Conference

ConferencePhotons Plus Ultrasound: Imaging and Sensing, SPIE BiOS 2012
Abbreviated titleSPIE BiOS
CountryUnited States
CitySan Francisco
Period22/01/1224/01/12

Keywords

  • Photoacoustic imaging
  • Breast cancer
  • Linear array transducer

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