Purpose Electronic portal imaging devices (EPIDs) have been widely utilized for patient‐
specific quality assurance (PSQA) and their use for transit dosimetry applications is …

Monte Carlo (MC) simulations play an important role in radiotherapy, especially as a method
to evaluate physical properties that are either impossible or difficult to measure. For …

Purpose: Radiation treatments are trending toward delivering higher doses per fraction
under stereotactic radiosurgery and hypofractionated treatment regimens. There is a need …

Purpose Gantry-mounted megavoltage electronic portal imaging devices (EPIDs) have
become ubiquitous on linear accelerators. WatchDog is a novel application of EPIDs, in …

We proposed to perform a basic dosimetry commissioning on a new imager system, the
Varian aS1200 electronic portal imaging device (EPID) and TrueBeam 2.0 linear accelerator …

Purpose: As treatment delivery becomes more complex, there is a pressing need for robust
quality assurance (QA) tools to improve efficiency and comprehensiveness while …

Methods to calibrate Megavoltage electronic portal imaging devices (EPIDs) for dosimetry
have been previously documented for dynamic treatments such as intensity modulated …

Although much literature has been devoted to portal dosimetry with the Varian amorphous
silicon (aSi) portal imager, the majority of the described methods are not routinely adopted …

Purpose: Dosimetric verification of radiation therapy is crucial when delivering complex
treatments like intensity modulated radiation therapy (IMRT) or volumetric modulated arc …

Purpose: Pretreatment verification of volumetric modulated arc therapy (VMAT) dose
delivery with electronic portal imaging device (EPID) uses images integrated over the entire …