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    Dose assessment of digital tomosynthesis in pediatric imaging

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    Gislason-Lee_et_al_2009_SPIE_paper.pdf (98.69Kb)
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    Publication date
    2009-03
    Author
    Gislason-Lee, Amber J.
    Elbakri, I.A.
    Reed, M.
    Keyword
    Digital tomosynthesis
    X-ray
    Effective dose
    Pediatric
    ALARA
    Digital radiography
    Rights
    © 2015, Society of Photo-Optical Instrumentation Engineers (SPIE). This is an author produced version of a paper published in Proceedings SPIE 7258, Medical Imaging. Physics of Medical Imaging.
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    We investigated the potential for digital tomosynthesis (DT) to reduce pediatric x-ray dose while maintaining image quality. We utilized the DT feature (VolumeRadTM) on the GE DefiniumTM 8000 flat panel system installed in the Winnipeg Children’s Hospital. Facial bones, cervical spine, thoracic spine, and knee of children aged 5, 10, and 15 years were represented by acrylic phantoms for DT dose measurements. Effective dose was estimated for DT and for corresponding digital radiography (DR) and computed tomography (CT) patient image sets. Anthropomorphic phantoms of selected body parts were imaged by DR, DT, and CT. Pediatric radiologists rated visualization of selected anatomic features in these images. Dose and image quality comparisons between DR, DT, and CT determined the usefulness of tomosynthesis for pediatric imaging. CT effective dose was highest; total DR effective dose was not always lowest – depending how many projections were in the DR image set. For the cervical spine, DT dose was close to and occasionally lower than DR dose. Expert radiologists rated visibility of the central facial complex in a skull phantom as better than DR and comparable to CT. Digital tomosynthesis has a significantly lower dose than CT. This study has demonstrated DT shows promise to replace CT for some facial bones and spinal diagnoses. Other clinical applications will be evaluated in the future.
    URI
    http://hdl.handle.net/10454/16967
    Version
    Accepted manuscript
    Citation
    Gislason-Lee, A, Elbakri IA and Reed M (2009) Dose assessment of digital tomosynthesis in pediatric imaging. In: Proceedings SPIE 7258, Medical Imaging. Physics of Medical Imaging. 13 Mar 2009, Lake Buena Vista (Orlando Area), Florida, USA. Society of Photo-Optical Instrumentation Engineers (SPIE).
    Link to publisher’s version
    https://doi.org/10.1117/12.813717
    Type
    Conference paper
    Collections
    Health Studies Publications

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