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- W2019958227 abstract "This study provides a simple method for improving precision of X-ray computed tomography (CT) scans of irradiated polymer gel dosimetry. The noise affecting CT scans of irradiated gels has been an impediment to the use of clinical CT scanners for gel dosimetry studies.In this study, it is shown that multiple scans of a single PAGAT gel dosimeter can be used to extrapolate a zero-scan image which displays a similar level of precision to an image obtained by averaging multiple CT images, without the compromised dose measurement resulting from the exposure of the gel to radiation from the CT scanner.When extrapolating the zero-scan image, it is shown that exponential and simple linear fits to the relationship between Hounsfield unit and scan number, for each pixel in the image, provide an accurate indication of gel density.It is expected that this work will be utilized in the analysis of three-dimensional gel volumes irradiated using complex radiotherapy treatments." @default.
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- W2019958227 date "2011-08-22" @default.
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- W2019958227 title "Improved image quality for x-ray CT imaging of gel dosimeters" @default.
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- W2019958227 doi "https://doi.org/10.1118/1.3626487" @default.
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