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    3D dynamic body surface sensing and CT-body matching: a tool for patient set-up and monitoring in radiotherapy.

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    Authors
    Moore, Christopher J
    Graham, Paul A
    Affiliation
    North Western Medical Physics, Christie Hospital, Manchester, UK. infcjm@dalpha2.cr.man.ac.uk
    Issue Date
    2000
    
    Metadata
    Show full item record
    Abstract
    Recent advances in radical broad-beam conformal radiotherapy for disease at non-rigid sites suggest that the treatment room set-up of patients should be performed using the CT-plan digital body surface as a reference standard. In effect, the CT-plan surface is a "virtual shell" and should be used as such. To do this requires 3D body surface information to be captured live in the treatment room and then manipulated for comparison with the CT virtual shell. To address this situation, a near real-time prototype opto-electronic dynamic 3D surface sensor has been developed and equipped with a novel software utility for visualizing and matching the disparate surfaces arising from planning and treatment environments. Using the CT virtual shell and height-maps produced by the sensor, a two-phase 3D positioning strategy for patient set-up and monitoring is described. Phase one is an image-guided manual "approach". Phase two is automated "docking" using simulated annealing to determine optimum set-up corrections. The concepts and implementation are illustrated using archival patient data and an anthropomorphic phantom "patient" in a treatment room environment.
    Citation
    3D dynamic body surface sensing and CT-body matching: a tool for patient set-up and monitoring in radiotherapy. 2000, 5 (4):234-45 Comput. Aided Surg.
    Journal
    Computer Aided Surgery
    URI
    http://hdl.handle.net/10541/86528
    DOI
    10.1002/1097-0150(2000)5:4<234::AID-IGS3>3.0.CO;2-8
    PubMed ID
    11029157
    Type
    Article
    Language
    en
    ISSN
    1092-9088
    ae974a485f413a2113503eed53cd6c53
    10.1002/1097-0150(2000)5:4<234::AID-IGS3>3.0.CO;2-8
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