Affiliation
North Western Medical Physics Department, Christie Hospital, Manchester, UK.Issue Date
1993-02
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Show full item recordAbstract
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 RadiolJournal
British Journal of RadiologyDOI
10.1259/0007-1285-66-782-140PubMed ID
8457827Type
ArticleLanguage
enISSN
0007-1285ae974a485f413a2113503eed53cd6c53
10.1259/0007-1285-66-782-140
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