Analysis of Portal Dosimetry Patient-Specific Quality Assurance Results of 1203 Patients Treated With O-ring Linear Accelerator
نویسندگان
چکیده
منابع مشابه
Patient-specific quality assurance of RapidArc treatments: Portal prediction dosimetry compared with phantom studies
Purpose: To validate a locally fabricated phantom of Imatrixx-2D Array by comparing its results with ArcCheck phantom and comparing portal dosimetry measurements with the two phantom studies. Materials and Methods: Electronic Portal Imaging Devices and Epiqa software were used for portal dosimetry. An Imatrixx-2D array with a locally fabricated phantom and ArcCheck cylindrical phantom were used...
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PURPOSE This work investigates the use of receiver operating characteristic (ROC) methods in patient specific IMRT quality assurance (QA) in order to determine unbiased methods to set threshold criteria for γ-distance to agreement measurements. METHODS A group of 17 prostate plans was delivered as planned while a second group of 17 prostate plans was modified with the introduction of random m...
متن کاملEvaluation of Dosimetry Check software for IMRT patient‐specific quality assurance
The purpose of this study is to evaluate the use of the Dosimetry Check system for patient-specific IMRT QA. Typical QA methods measure the dose in an array dosimeter surrounded by homogenous medium for which the treatment plan has been recomputed. With the Dosimetry Check system, fluence measurements acquired on a portal dosimeter is applied to the patient's CT scans. Instead of making dose co...
متن کاملThe GLAaS algorithm for portal dosimetry and quality assurance of RapidArc, an intensity modulated rotational therapy
BACKGROUND To expand and test the dosimetric procedure, known as GLAaS, for amorphous silicon detectors to the RapidArc intensity modulated arc delivery with Varian infrastructures and to test the RapidArc dosimetric reliability between calculation and delivery. METHODS The GLAaS algorithm was applied and tested on a set of RapidArc fields at both low (6 MV) and high (18 MV) beam energies wit...
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ژورنال
عنوان ژورنال: International Journal of Radiation Oncology*Biology*Physics
سال: 2020
ISSN: 0360-3016
DOI: 10.1016/j.ijrobp.2020.07.706