Clinical validation of an in-house EPID dosimetry system for IMRT QA at the Prince of Wales Hospital
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چکیده
منابع مشابه
The Prince of Wales at Guy's Hospital
squalid houses commanding even the most distant view of the proceedings were full of boys and girls anxious to catch a glimpse of the Prince. His Royal Highness, who passed to the platform amid terrific cheering, was accompanied by various officials of Guy's, and took his seat between Lord Goschen, the Treasurer of the Hospital, and Mr. Herbert Waring, Vice-Chancellor of the University of Londo...
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Introduction: Electronic portal imaging devices (EPIDs) could potentially be useful for intensity-modulated radiation therapy (IMRT) and VMAT QA. The data density, high resolution, large active area, and efficiency of the MV EPID make it an attractive option. However, EPIDs were designed as imaging devices, not dosimeters, and as a result they do not inherently measure dose in ...
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Establishing action levels for EPID‐based QA for IMRT
Although portal dosimetry is used to provide quality assurance (QA) for intensity-modulated radiation therapy (IMRT) treatment plans, trends in agreement between the portal dose prediction (PDP) and the measured dose have not been clarified. In this work, we evaluated three scalar parameters of agreement for 152 treatment plans (1152 treatment fields): maximum gamma (gamma max), average gamma (...
متن کاملImage processing for IMRT QA dosimetry
We have automated the determination of the placement location of the dosimetry ion chamber within intensity-modulated radiotherapy (IMRT) fields, as part of streamlining the entire IMRT quality assurance process. This paper describes the mathematical image-processing techniques to arrive at the appropriate measurement locations within the planar dose maps of the IMRT fields. A specific spot wit...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2013
ISSN: 1742-6596
DOI: 10.1088/1742-6596/444/1/012043