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    The efficacy of lead shielding in megavoltage radiotherapy.

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    Authors
    Marrs, Julie E
    Hounsell, Alan R
    Wilkinson, James M
    Affiliation
    North Western Medical Physics Department, Christie Hospital, Manchester, UK.
    Issue Date
    1993-02
    
    Metadata
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    Abstract
    The dose received by anatomical structures which are apparently shielded by lead blocks during a course of megavoltage radiotherapy may not be negligible. The dose has three main components; there is that due to radiation transmitted through the shielding block, that due to radiation scattered within the patient and that due to radiation scattered prior to reaching the patient and so circumventing the shield. A calculation method which separates the three components has been investigated and the results have been compared with measurements in a wide range of test situations for both cobalt-60 and 6 MV photon beams. The method of calculation predicts the dose behind the shielding block with acceptable accuracy in all the conditions investigated.
    Citation
    The efficacy of lead shielding in megavoltage radiotherapy. 1993, 66 (782):140-4 Br J Radiol
    Journal
    British Journal of Radiology
    URI
    http://hdl.handle.net/10541/99803
    DOI
    10.1259/0007-1285-66-782-140
    PubMed ID
    8457827
    Type
    Article
    Language
    en
    ISSN
    0007-1285
    ae974a485f413a2113503eed53cd6c53
    10.1259/0007-1285-66-782-140
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