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    A VMAT planning solution for prostate patients using a commercial treatment planning system.

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    Authors
    Boylan, C J
    Golby, C
    Rowbottom, Carl G
    Affiliation
    North Western Medical Physics, The Christie NHS Foundation Trust, Wilmslow Road, Manchester M20 4BX, UK. hristopher.Boylan@physics.cr.man.ac.uk
    Issue Date
    2010-07-21
    
    Metadata
    Show full item record
    Abstract
    Volumetric modulated arc therapy (VMAT) is a rotational delivery technique which offers the potential of improved dose distributions and shorter treatment times when compared to fixed-beam intensity-modulated radiation therapy (IMRT). This note describes the use of an existing treatment planning system (Philips Pinnacle(3) v.8.0), supplemented by in-house software, to produce a single-arc VMAT prostate plan. While a number of planning systems for the Elekta VMAT platform are commercially available, the use of an in-house solution has allowed more detailed investigations of VMAT planning, as well as greater control over the optimization process. The solution presented here begins with a static step-and-shoot IMRT approach to provide initial segment shapes, which are then modified and sequenced into 60 equally spaced control points in a 360 degrees arc. Dose-volume histogram comparisons demonstrate that this VMAT planning method offers multiple dose level target coverage comparable to that from a standard IMRT approach. The VMAT plans also show superior sparing of critical structures such as the rectum and bladder. Delivery times are reduced with the VMAT method, and the results of dosimetric verification, resilience and repeatability tests indicate that the solution is robust.
    Citation
    A VMAT planning solution for prostate patients using a commercial treatment planning system. 2010, 55 (14):N395-404 Phys Med Biol
    Journal
    Physics in Medicine and Biology
    URI
    http://hdl.handle.net/10541/111155
    DOI
    10.1088/0031-9155/55/14/N01
    PubMed ID
    20601771
    Type
    Article
    Language
    en
    ISSN
    1361-6560
    ae974a485f413a2113503eed53cd6c53
    10.1088/0031-9155/55/14/N01
    Scopus Count
    Collections
    All Christie Publications
    Christie Medical Physics and Engineering Research

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