Results 11 to 20 of about 18,422 (295)
Planar EPID-Based Dosimetry for SRS and SRT Patient-Specific QA [PDF]
Life, 2021 The study’s purpose was to develop and validate Electronic Portal Imaging Device (EPID)-based dosimetry for Stereotactic Radiosurgery (SRS) and Stereotactic Radiation Therapy (SRT) patient-specific Quality Assurance (QA).
Sangutid Thongsawad +3 more
doaj +6 more sources
A feasibility study of deep learning prediction model for VMAT patient-specific QA [PDF]
Frontiers in OncologyPurposeThis study introduces a deep learning (DL) model that leverages doses calculated from both a treatment planning system (TPS) and independent dose verification software using Monte Carlo (MC) simulations, aiming to predict the gamma passing rate ...
Junjie Miao +3 more
doaj +4 more sources
Correlation of phantom-based and log file patient-specific QA with complexity scores for VMAT. [PDF]
J Appl Clin Med Phys, 2014 The motivation for this study was to reduce physics workload relating to patient‐specific quality assurance (QA). VMAT plan delivery accuracy was determined from analysis of pre‐ and on‐treatment trajectory log files and phantom‐based ionization chamber array measurements.
Agnew CE, Irvine DM, McGarry CK.
europepmc +7 more sources
Virtual patient-specific QA with DVH-based metrics. [PDF]
J Appl Clin Med Phys, 2022 AbstractWe demonstrate a virtual pretreatment patient‐specific QA (PSQA) procedure that is capable of quantifying dosimetric effect on patient anatomy for both intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT). A machine learning prediction model was developed to use linear accelerator parameters derived from the DICOM‐
Lay LM +4 more
europepmc +3 more sources
Evaluation of commercial devices for patient specific QA of stereotactic radiotherapy plans. [PDF]
J Appl Clin Med Phys, 2023 AbstractStereotactic radiotherapy (SRT) methods have become common for the treatment of small tumors in various parts of the body. Small field dosimetry has a unique set of challenges when it comes to the pre‐treatment validation of a radiotherapy plan that involves film dosimetry or high‐resolution detectors. Comparison of commercial quality assurance
James S +7 more
europepmc +3 more sources
Feasibility of a 3D-printed anthropomorphic patient-specific head phantom for patient-specific quality assurance of intensity-modulated radiotherapy. [PDF]
PLoS ONE, 2017 This study evaluated the feasibility of utilizing a 3D-printed anthropomorphic patient-specific head phantom for patient-specific quality assurance (QA) in intensity-modulated radiotherapy (IMRT).
Ji Woon Yea +8 more
doaj +2 more sources
A virtual phantom for patient-specific QA On A 1.5T MR-linac. [PDF]
J Appl Clin Med PhysAbstractCreate a virtual ArcCHECK‐MR phantom, customized for a 1.5T MR‐linac, with consideration of the different density regions within the quality assurance (QA) phantom, aiming to streamline the utilization of this specialized QA device. A virtual phantom was constructed in the treatment planning system (TPS) to replicate the ArcCHECK‐MR's ...
Ji M +5 more
europepmc +3 more sources
Evaluation of a planar diode matrix for SRS patient-specific QA in comparison with GAFchromic films. [PDF]
J Appl Clin Med Phys, 2023 AbstractPurposeWe validate the routine use of a two‐dimensional (2D) diode matrix for patient specific pre‐treatment verification for Cyberknife (CK) stereotactic radiosurgery and to compare it with film dosimetry.Materials and methodA total of 46 patients were selected according to the most frequent diseases treated at our institution with the CK ...
Infusino E +5 more
europepmc +3 more sources
Pixel response-based EPID dosimetry for patient specific QA. [PDF]
J Appl Clin Med Phys, 2017 AbstractIncreasing use of high dose rate, flattening filter free (FFF), and/or small‐sized field beams presents a significant challenge to the medical physics community. In this work, we develop a strategy of using a high spatial resolution and high frame rate amorphous silicon flat panel electronic portal imaging device (EPID) for dosimetric ...
Han B, Ding A, Lu M, Xing L.
europepmc +3 more sources
Statistical process control analysis for patient-specific IMRT and VMAT QA [PDF]
Journal of Radiation Research, 2012 This work applied statistical process control to establish the control limits of the % gamma pass of patient-specific intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) quality assurance (QA), and to evaluate the efficiency of the QA process by using the process capability index (Cpml).
Sanghangthum, Taweap +3 more
openaire +3 more sources