Results 21 to 30 of about 8,615 (194)

API-enabled integration of Pylinac with QATrack+ for automated EPID-based QA on Elekta linear accelerators: a technical note [PDF]

open access: yesReports of Practical Oncology and Radiotherapy
BACKGROUND: EPID quality assurance (QA) workflows remain largely manual and are difficult to standardise across treatment machines. This limits efficiency, increases operator dependency, and complicates consistent reporting and data sharing between ...
Oussama El Mouden   +9 more
doaj   +2 more sources

In-vivo dosimetry using electronic portal imaging in online-adaptive radiotherapy for rectal cancer [PDF]

open access: yesPhysics and Imaging in Radiation Oncology
Background 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

Dose Characteristics of a Deep Learning Model for EPID-based In vivo Dosimetry [PDF]

open access: yesJournal of Medical Physics
Background: Images from onboard electronic portal imaging devices (EPID) contain dose information that can be converted into dose maps. A cycle-consistent generative adversarial network (CycleGAN)-based model was developed for two-dimensional (2D) EPID ...
Qilin Li   +4 more
doaj   +2 more sources

Setup Error Differences and Margin Expansion Among Rectal Cancer Segments: Consistency Evaluation Between EPID and iSCOUT [PDF]

open access: yesCancer Reports
Purpose To analyze the differences in setup errors among patients with rectal cancer in the upper, middle and lower segments and evaluate the consistency between electronic portal imaging device (EPID) and iSCOUT image‐guided techniques.
Bao Wan   +10 more
doaj   +2 more sources

Reporting Clinical Results of EPID-Based Patient-Specific Quality Assurance for Brain Stereotactic Radiosurgery/Radiation Therapy: Demonstrating the Feasibility of Same-Day Stereotactic Radiosurgery via HyperArc Delivery [PDF]

open access: yesAdvances in Radiation Oncology
Purpose: Patient-specific quality assurance (PSQA) of complex volumetric modulated arc therapy plans via Electronic portal imaging device (EPID)-based portal dosimetry (PD) is widely adopted by the radiation therapy community.
Damodar Pokhrel, PhD   +3 more
doaj   +2 more sources

Catching errors with in vivo EPID dosimetry.

open access: yes, 2010
The potential for detrimental incidents and the ever increasing complexity of patient treatments emphasize the need for accurate dosimetric verification in radiotherapy.
Tielenburg, R   +9 more
core   +9 more sources

wzbillings/EPID-8130-Final-Paper: Final paper draft

open access: yes, 2021
<p>This is the final draft of my paper for EPID 8130. Future updates will not edit the content of the paper unless absolutely necessary (or based on feedback after grading).</p> <p>In this work, I perform a systematic review of ...
Zane Billings
core   +1 more source

A Validation Method for EPID In Vivo Dosimetry Algorithms [PDF]

open access: yesApplied Sciences, 2021
The aim of this study was to develop and apply an evaluation method for assessing the accuracy of a novel 3D EPID back-projection algorithm for in vivo dosimetry. The novel algorithm of Dosimetry Check (DC) 5.8 was evaluated. A slab phantom homogeneously filled, or with air and bone inserts, was used for fluence reconstruction of different squared ...
Marco Esposito   +5 more
openaire   +3 more sources

Exacerbations and healthcare resource utilization among COPD patients in a Swedish registry-based nation-wide study

open access: yesBMC Pulmonary Medicine, 2018
Background Exacerbations of chronic obstructive pulmonary disease (COPD) are an important measure of disease severity in terms of impaired disease progression, increased recovery time, healthcare resource utilization, overall morbidity and mortality.
Gunnar Johansson   +6 more
doaj   +1 more source

Importance of beam-matching between truebeam stx and novalis tx in pre-treatment quality assurance using portal dosimetry

open access: yesJournal of Medical Physics, 2021
Flexibility and efficiency in a radiotherapy department with different linear accelerators (linacs) can be improved if they are dosimetrically equivalent, and there is no need of plan or patient-specific quality assurance (PSQA) modification.
José Alejandro Rojas-López   +1 more
doaj   +1 more source

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