Evaluation of Interfractional Setup Uncertainties and Calculation of Adequate CTV-PTV Margin for Head and Neck Radiotherapy using Electronic Portal Imaging Device [PDF]
Journal of Biomedical Physics and EngineeringBackground: The evaluation of treatment-associated errors is important in the radiotherapy process, particularly those resulting related to patient setup.Objective: This research aimed to assess the interfractional setup errors and determine the Clinical
Elham Ahmadi +5 more
doaj +3 more sources
Journal of Medical Physics, 2019 Aim: This study aimed at evaluating the efficacy of treatment planning system (TPS)-based heterogeneity correction for two- and three-dimensional (2D and 3D) electronic portal imaging device (EPID)-based pretreatment dose verification.
Manikandan Arjunan +3 more
doaj +3 more sources
In vivo dosimetry with an electronic portal imaging device for prostate cancer radiotherapy with an endorectal balloon [PDF]
Physics and Imaging in Radiation Oncology, 2019 Electronic portal imaging device-based in vivo dosimetry with a commercial product was performed for 10 prostate cancer patients treated with an air-filled endorectal balloon.
Bo Sterckx +2 more
doaj +3 more sources
Journal of Medical Physics, 2019 Purpose: PerFRACTION™ is a three-dimensional (3D) in vivo electronic portal imaging device-based dosimetry software. To validate the software, three phantoms with different inserts (2D array, ionization chamber, and inhomogeneity materials) were ...
A Aziz Sait +6 more
doaj +3 more sources
Journal of Medical Physics, 2017 Aims: This study investigates the impact of cine acquisition mode on the dosimetric characteristics of a Varian aS500 amorphous silicon electronic portal imaging device (a-Si EPID).
Omemh Bawazeer +4 more
doaj +3 more sources
The fast calibration model for dosimetry with an electronic portal imaging device. [PDF]
J Appl Clin Med Phys, 2022 Purpose The aim of this study was to develop an algorithm that corrects the image of an electronic portal imaging device (EPID) of a linear accelerator so that it can be used for dosimetric purposes, such as in vivo dosimetry or quality assurance for ...
Schade S +3 more
europepmc +2 more sources
Determination of the electronic portal imaging device pixel-sensitivity-map for quality assurance applications. Part 1: Comparison of methods. [PDF]
J Appl Clin Med Phys, 2022 Purpose Calibration of a radiotherapy electronic portal imaging device (EPID) using the pixel‐sensitivity‐map (PSM) in place of the flood field correction improves the utility of the EPID for quality assurance applications. Multiple methods are available
Barnes MP +8 more
europepmc +2 more sources
Open Chemistry, 2022 In this study, the feasibility of using electronic portal imaging device (EPID) as an analysing equipment for bolus material was evaluated in terms of its dosimetric parameters.
Özseven Alper
doaj +2 more sources
Comparison of pretreatment VMAT quality assurance with the integral quality monitor (IQM) and electronic portal imaging device (EPID). [PDF]
J Appl Clin Med Phys, 2021 The purpose of this study was to compare pretreatment volumetric modulated arc therapy (VMAT) quality assurance (QA) measurements and evaluate the multileaf collimator (MLC) error sensitivity of two detectors: the integral quality monitor (IQM) system ...
Ghafarian M, Price M, Morales-Paliza M.
europepmc +2 more sources
Evaluation of two-dimensional electronic portal imaging device using integrated images during volumetric modulated arc therapy for prostate cancer. [PDF]
Rep Pract Oncol Radiother, 2021 Background The aim of the study was to evaluate analysis criteria for the identification of the presence of rectal gas during volumetric modulated arc therapy (VMAT) for prostate cancer patients by using electronic portal imaging device (EPID)-based in ...
Inui S +9 more
europepmc +2 more sources