Design and fabrication of PMN-PT based high frequency ultrasound imaging devices integrated into medical interventional tools

R. T. Ssekitoleko, C. E. M. Demore, S. Cochran, J. H. G. Ng, D. Flynn, M. P. Y. Desmulliez

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    This paper presents the rational for in vivo biopsy and the main technical challenges that must be overcome to realize this application. These include the need to achieve a small array package, the need for high frequency operation for high resolution, and the need for economical manufacturing. An array design is described, with 64 elements at 100 mu m pitch, made with PMN-PT piezocrystal and operating at 15 MHz, to demonstrate resolution of 100 mu m and the advantages of imaging close up. Techniques adopted to reduce the challenges are described, including, for example, spiral winding of a flexible circuit to achieve external connections. Results from prototypes to date include measurement of pulse-echo signals from a 20 MHz single element piezocrystal piezocomposite and first production of a 5 MHz demonstrator device. Further work will focus particularly on the method of interconnection of the flexible circuit to the array, and incorporation of the array within a biopsy needle.

    Original languageEnglish
    Title of host publication2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
    Place of PublicationNew York
    PublisherIEEE Computer Society
    Pages2345-2348
    Number of pages4
    ISBN (Print)9781457712524
    DOIs
    Publication statusPublished - 2012
    Event2011 IEEE International Ultrasonics Symposium (IUS) - Orlando, United States
    Duration: 18 Oct 201121 Oct 2011
    http://ewh.ieee.org/conf/ius_2011/

    Conference

    Conference2011 IEEE International Ultrasonics Symposium (IUS)
    Abbreviated title2011 IEEE IUS
    CountryUnited States
    CityOrlando
    Period18/10/1121/10/11
    Internet address

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