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    Real-time optical measurement of the dynamic body surface for use in guided radiotherapy.

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    Authors
    Price, Gareth J
    Parkhurst, J M
    Sharrock, Phillip J
    Moore, Christopher J
    Affiliation
    Developing Technologies, Christie Medical Physics and Engineering, The Christie NHS Foundation Trust, Manchester, UK. Gareth.Price@physics.cr.man.ac.uk
    Issue Date
    2012-01-21
    
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    Abstract
    Optical measurements are increasingly used in radiotherapy. In this paper we present, in detail, the design and implementation of a multi-channel optical system optimized for fast, high spatial resolution, dynamic body surface measurement in guided therapy. We include all algorithmic modifications and calibration procedures required to create a robust, practical system for clinical use. Comprehensive static and dynamic phantom validation measurements in the radiotherapy treatment room show: conformance with simultaneously measured cone beam CT data to within 1 mm over 62% ± 8% of the surface and 2 mm over 90% ± 3%; agreement with the measured radius of a precision geometrical phantom to within 1 mm; and true real-time performance with image capture through to surface display at 23 Hz. An example patient dataset is additionally included, indicating similar performance in the clinic.
    Citation
    Real-time optical measurement of the dynamic body surface for use in guided radiotherapy. 2012, 57 (2):415-36 Phys Med Biol
    Journal
    Physics in Medicine and Biology
    URI
    http://hdl.handle.net/10541/216272
    DOI
    10.1088/0031-9155/57/2/415
    PubMed ID
    22173038
    Type
    Article
    Language
    en
    ISSN
    1361-6560
    ae974a485f413a2113503eed53cd6c53
    10.1088/0031-9155/57/2/415
    Scopus Count
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    Christie Medical Physics and Engineering Research

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