The use of computed radiography for routine linear accelerator and simulator quality control.
Affiliation
North Western Medical Physics, Radiotherapy Department, Rosemere Cancer Centre, Lancashire Teaching Hospitals NHS Foundation Trust, Preston, UK. imran.patel@lthtr.nhs.ukIssue Date
2009-10
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Show full item recordAbstract
Computed radiography (CR) systems were originally developed for the purpose of clinical imaging, and there has been much work published on its effectiveness as a film replacement for this end. However, there has been little published on its use for routine linear accelerator and simulator quality control, and therefore we have evaluated the use of the Kodak 2000RT system with large Agfa CR plates as a replacement for film for this function. A prerequisite for any such use is a detailed understanding of the system behaviour, hence characteristics such as spatial uniformity of response, reproducibility of spatial accuracy, plate signal decay with time and the dose-response of plates were investigated. Finally, a comparison of results obtained using CR for the measurement of radiation field dimensions was made against those from radiographic film, and found to be in agreement within 0.1 mm (mean difference for high-resolution images, 0.3 mm root mean square difference) for megavoltage images and 0.3 mm (maximum difference) for simulator images. In conclusion, the CR system has been shown to be a good alternative to radiographic film for routine quality control of linear accelerators and simulators.Citation
The use of computed radiography for routine linear accelerator and simulator quality control. 2009, 82 (982):827-38 Br J RadiolJournal
The British Journal of RadiologyDOI
10.1259/bjr/98497325PubMed ID
19398464Type
ArticleLanguage
enISSN
1748-880Xae974a485f413a2113503eed53cd6c53
10.1259/bjr/98497325
Scopus Count
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