A collapsed-cone based transit EPID dosimetry method [PDF]
Physica Medica, 2018 To develop a transit-dose portal dosimetry method based on a commercial collapsed-cone algorithm.A Varian Clinac21EX (Varian Medical Systems, USA), equipped with an amorphous-silicon EPID aS1000, was used. Dose calculations were performed with the collapsed-cone algorithm of Pinnacle3 v8.0 m (Philips Medical Systems, USA).
Jaime Martinez Ortega
exaly +6 more sources
A dual two dimensional electronic portal imaging device transit dosimetry model based on an empirical quadratic formalism. [PDF]
Br J Radiol, 2015 Objective: This study describes a two dimensional electronic portal imaging device (EPID) transit dosimetry model that can predict either: (1) in-phantom exit dose, or (2) EPID transit dose, for treatment verification.
Tan YI +4 more
europepmc +4 more sources
A Large Area Pixelated Silicon Array Detector for Independent Transit In Vivo Dosimetry [PDF]
Applied Sciences, 2022 A large area pixelated silicon array detector named “MP987” has been developed for in vivo dosimetry. The detector was developed to overcome the non-water equivalent response of EPID (Electronic Portal Imaging Device) dosimetry systems, due to the ...
Owen J. Brace +9 more
doaj +2 more sources
Radiotherapy planning in a prostate cancer phantom model with intraprostatic dominant lesions using stereotactic body radiotherapy with volumetric modulated arcs and a simultaneous integrated boost [PDF]
Frontiers in Oncology, 2023 AimIn the treatment of prostate cancer with radiation therapy, the addition of a simultaneous integrated boost (SIB) to the dominant intraprostatic lesions (DIL) may improve local control.
Agnieszka Skrobala +9 more
doaj +2 more sources
In-vivo dosimetry using electronic portal imaging in online-adaptive radiotherapy for rectal cancer [PDF]
Physics and Imaging in Radiation OncologyBackground and purpose: Electronic portal imaging device (EPID)-based in-vivo dosimetry (IVD) is widely used to verify radiotherapy dose delivery and detect deviations from anatomical changes, setup uncertainties, or machine-related errors. However, cone-
Gary Razinskas +7 more
doaj +2 more sources
Feasibility study on the verification of actual beam delivery in a treatment room using EPID transit dosimetry. [PDF]
Radiat Oncol, 2014 PurposeThe aim of this study is to evaluate the ability of transit dosimetry using commercial treatment planning system (TPS) and an electronic portal imaging device (EPID) with simple calibration method to verify the beam delivery based on detection of ...
Baek TS, Chung EJ, Son J, Yoon M.
europepmc +2 more sources
A component-wise commissioning and validation framework for non-transit electronic portal imaging device patient-specific quality assurance [PDF]
Physics and Imaging in Radiation OncologyBackground and purpose: The American Association of Physicists in Medicine Task Group 307 (AAPM TG-307) recommends validation of electronic portal imaging device (EPID) patient-specific quality assurance (PSQA), including verification of measured and ...
Leyla Moghaddasi +7 more
doaj +2 more sources
TransitQA — A new method for transit dosimetry of Tomotherapy patients
Medical Physics, 2017 PurposeTransitQA is an innovative method for Tomotherapy transit dosimetry using the on‐board detector (OBD). Our previously published model for Tomotherapy treatment plan verification (AirQA) has been enhanced to take into account patient and couch transmission.
Olivier, Pisaturo +3 more
openaire +3 more sources
Comparison of deep learning models for building two-dimensional non-transit EPID Dosimetry on Varian Halcyon [PDF]
Reports of Practical Oncology & RadiotherapyBackground This study compared the effectiveness of five deep learning models in constructing non-transit dosimetry with an a-Si electronic portal imaging device (EPID) on Varian Halcyon. Deep learning model is increasingly used to support prediction and
M. M. Ramadhan +3 more
semanticscholar +3 more sources
Feasibility of a dual detector system to perform transit dosimetry and MV imaging in-vivo [PDF]
Journal of Instrumentation, 2019 In this work, a dual detector system for simultaneous in-vivo dosimetry and MV imaging was investigated. The ability to measure real-time water equivalent dose post transit for a heterogeneous phantom was demonstrated, illustrating its advantage over non-
O. Brace +7 more
semanticscholar +2 more sources