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dc.contributor.authorPatel, I
dc.contributor.authorNatarajan, T
dc.contributor.authorHassan, S S
dc.contributor.authorKirby, Mike C
dc.date.accessioned2010-02-09T11:06:45Z
dc.date.available2010-02-09T11:06:45Z
dc.date.issued2009-10
dc.identifier.citationThe use of computed radiography for routine linear accelerator and simulator quality control. 2009, 82 (982):827-38 Br J Radiolen
dc.identifier.issn1748-880X
dc.identifier.pmid19398464
dc.identifier.doi10.1259/bjr/98497325
dc.identifier.urihttp://hdl.handle.net/10541/91477
dc.description.abstractComputed 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.
dc.language.isoenen
dc.subject.meshHumans
dc.subject.meshImage Processing, Computer-Assisted
dc.subject.meshParticle Accelerators
dc.subject.meshQuality Control
dc.subject.meshRadiographic Image Enhancement
dc.subject.meshRadiographic Image Interpretation, Computer-Assisted
dc.subject.meshReproducibility of Results
dc.subject.meshTomography, X-Ray Computed
dc.subject.meshX-Ray Film
dc.titleThe use of computed radiography for routine linear accelerator and simulator quality control.en
dc.typeArticleen
dc.contributor.departmentNorth Western Medical Physics, Radiotherapy Department, Rosemere Cancer Centre, Lancashire Teaching Hospitals NHS Foundation Trust, Preston, UK. imran.patel@lthtr.nhs.uken
dc.identifier.journalThe British Journal of Radiologyen
html.description.abstractComputed 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.


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