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    Development of ultrasound tomography for breast imaging: technical assessment

    Access Status
    Fulltext not available
    Authors
    Duric, N.
    Littrup, P.
    Babkin, A.
    Chambers, D.
    Azevedo, S.
    Arkady, K.
    Pevzner, Roman
    Tokarev, M.
    Holsapple, E.
    Date
    2005
    Type
    Journal Article
    
    Metadata
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    Citation
    Duric, N. and Littrup, P. and Babkin, A. and Chambers, D. and Azevedo, S. and Arkady, K. and Pevzner, R. and Tokarev, M. and Holsapple, E. 2005. Development of ultrasound tomography for breast imaging: technical assessment. Medical Physics. 32 (5): pp. 1375-1386.
    Source Title
    Medical Physics
    ISSN
    00942405
    Faculty
    Department of Exploration Geophysics
    Faculty of Science and Engineering
    WA School of Mines
    URI
    http://hdl.handle.net/20.500.11937/22850
    Collection
    • Curtin Research Publications
    Abstract

    Ultrasound imaging is widely used in medicine because of its benign characteristics and real-time capabilities. Physics theory suggests that the application of tomographic techniques may allow ultrasound imaging to reach its full potential as a diagnostic tool allowing it to compete with other tomographic modalities such as X-ray CT and MRI. This paper describes the construction and use of a prototype tomographic scanner and reports on the feasibility of implementing tomographic theory in practice and the potential of US tomography in diagnostic imaging. Data were collected with the prototype by scanning two types of phantoms and a cadaveric breast. A specialized suite of algorithms was developed and utilized to construct images of reflectivity and sound speed from the phantom data. The basic results can be summarized as follows.(i) A fast, clinically relevant US tomography scanner can be built using existing technology, (ii) The spatial resolution, deduced from images of reflectivity, is 0.4 mm. The demonstrated 10 cm depth-of-field is superior to that of conventional ultrasound and the image contrast is improved through the reduction of speckle noise and overall lowering of the noise floor. (iii) Images of acoustic properties such as sound speed suggest that it is possible to measure variations in the sound speed of 5 m/s. An apparent correlation with X-ray attenuation suggests that the sound speed can be used to discriminate between various types of soft tissue. (iv) Ultrasound tomography has the potential to improve diagnostic imaging in relation to breast cancer detection.

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