A quantitative method to the analysis of MLC leaf position and speed based on EPID and EBT3 film for dynamic IMRT treatment with different types of MLC
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.12102
Abstract: Abstract A quantitative method based on the electronic portal imaging system (EPID) and film was developed for MLC position and speed testing; this method was used for three MLC types (Millennium, MLCi, and Agility MLC).… read more here.
Keywords: position speed; analysis; position; film ... See more keywords
A study on the effect of detector resolution on gamma index passing rate for VMAT and IMRT QA
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.12285
Abstract: Abstract The main objectives of this study are to (1) analyze the sensitivity of various gamma index passing rates using different types of detectors having different resolutions and (2) investigate the sensitivity of various gamma… read more here.
Keywords: resolution; gamma index; mlc; passing rate ... See more keywords
Stereotactic radiosurgery with MLC‐defined arcs: Verification of dosimetry, spatial accuracy, and end‐to‐end tests
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.12583
Abstract: Abstract Purpose To measure dosimetric and spatial accuracy of stereotactic radiosurgery (SRS) delivered to targets as small as the trigeminal nerve (TN) using a standard external beam treatment planning system (TPS) and multileaf collimator‐(MLC) equipped… read more here.
Keywords: end tests; accuracy; mlc; spatial accuracy ... See more keywords
Influence of maximum MLC leaf speed on the quality of volumetric modulated arc therapy plans
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.13020
Abstract: Abstract Purpose Maximum leaf speed is a configurable parameter of MLC in a treatment‐planning system. This study investigated the influence of MLC on the quality of VMAT plans. Methods Seven MLCs with different maximum leaf… read more here.
Keywords: quality; vmat plan; plan scores; plan ... See more keywords
Potential dose variability for small-field plans delivered with Elekta Agility collimators.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of applied clinical medical physics"
DOI: 10.1002/acm2.13349
Abstract: Dear Editor, A recent publication by Lorenz and Paris1 “Identification of a potential source of error for 6 FFF beams delivered on an AgilityTM multileaf collimator” reported on discrepancy between calculated and measured doses to… read more here.
Keywords: mlc; photon beams; plans using; agilitytm mlc ... See more keywords
Static MLC transmission simulation using two‐dimensional ray tracing
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.13646
Abstract: Abstract Purpose We investigated the hypothesis that the transmission function of rounded end linearly traveling multileaf collimators (MLCs) is constant with position. This assumption is made by some MLC models used in clinical treatment planning… read more here.
Keywords: ray tracing; two dimensional; mlc; dimensional ray ... See more keywords
Insensitivity of machine log files to MLC leaf backlash and effect of MLC backlash on clinical dynamic MLC motion: An experimental investigation
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.13660
Abstract: Abstract Purpose Multi‐leaf‐collimator (MLC) leaf position accuracy is important for accurate dynamic radiotherapy treatment plan delivery. Machine log files have become widely utilized for quality assurance (QA) of such dynamic treatments. The primary aim is… read more here.
Keywords: mlc; machine; log files; mlc leaf ... See more keywords
Is a weekly qualitative picket fence test sufficient? A proposed alternate EPID‐based weekly MLC QA program
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.13699
Abstract: Abstract Purpose Well‐designed routine multileaf collimator (MLC) quality assurance (QA) is important to assure external‐beam radiation treatment delivery accuracy. This study evaluates the clinical necessity of a comprehensive weekly (C‐Weekly) MLC QA program compared to… read more here.
Keywords: mlc program; weekly mlc; mlc; picket fence ... See more keywords
Improvement of deep learning prediction model in patient-specific QA for VMAT with MLC leaf position map and patient's dose distribution.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of applied clinical medical physics"
DOI: 10.1002/acm2.14055
Abstract: PURPOSE Deep learning-based virtual patient-specific quality assurance (QA) is a novel technique that enables patient QA without measurement. However, this method could be improved by further evaluating the optimal data to be used as input.… read more here.
Keywords: mlc; patient; deep learning; model ... See more keywords
IL‐6 increases podocyte motility via MLC‐mediated focal adhesion impairment and cytoskeleton disassembly
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Cellular Physiology"
DOI: 10.1002/jcp.26546
Abstract: The disturbance of podocyte motility is an essential pathogenic mechanisms of foot process effacement during proteinuric diseases, and myosin light chain (MLC) is a pivotal component in regulating the motility of podocytes. Inflammatory cytokine interleukin‐6… read more here.
Keywords: cytoskeleton; focal adhesion; motility; mlc ... See more keywords
An experimentally validated couch and MLC tracking simulator used to investigate hybrid couch‐MLC tracking
Sign Up to like & getrecommendations! Published in 2017 at "Medical Physics"
DOI: 10.1002/mp.12104
Abstract: Purpose/objective: Couch and MLC tracking are two novel techniques to mitigate intrafractional tumor motion on a conventional linear accelerator, but both techniques still have residual dosimetric errors. Here, we first propose and experimentally validate a… read more here.
Keywords: motion; error; simulator; couch mlc ... See more keywords