Validation of an in vivo transit dosimetry algorithm using Monte Carlo simulations and ionization chamber measurements [PDF]
Journal of Applied Clinical Medical Physics, 2023 Purpose Transit dosimetry is a safety tool based on the transit images acquired during treatment. Forward‐projection transit dosimetry software, as PerFRACTION, compares the transit images acquired with an expected image calculated from the DICOM plan ...
Marcelino Hermida-Lopez
exaly +9 more sources
A convolutional neural network model for EPID-based non-transit dosimetry. [PDF]
J Appl Clin Med Phys, 2023 AbstractPurposeTo develop an alternative computational approach for EPID‐based non‐transit dosimetry using a convolutional neural network model.MethodA U‐net followed by a non‐trainable layer named True Dose Modulation recovering the spatialized information was developed.
Bosco LD +5 more
europepmc +8 more sources
Evaluation of automated pre-treatment and transit in-vivo dosimetry in radiotherapy using empirically determined parameters [PDF]
Physics and Imaging in Radiation Oncology, 2020 Background and purpose: First reports on clinical use of commercially automated systems for Electronic Portal Imaging Device (EPID)-based dosimetry in radiotherapy showed the capability to detect important changes in patient setup, anatomy and external ...
Evy Bossuyt +4 more
doaj +7 more sources
Assessing the impact of adaptations to the clinical workflow in radiotherapy using transit in vivo dosimetry [PDF]
Physics and Imaging in Radiation Oncology, 2023 Background and Purpose: Currently in-vivo dosimetry (IVD) is primarily used to identify individual patient errors in radiotherapy. This study investigated possible correlations of observed trends in transit IVD results, with adaptations to the clinical ...
Evy Bossuyt +4 more
doaj +5 more sources
Implementation and evaluation of a transit dosimetry system for treatment verification [PDF]
Physica Medica, 2016 To evaluate a formalism for transit dosimetry using a phantom study and prospectively evaluate the protocol on a patient population undergoing 3D conformal radiotherapy.Amorphous silicon EPIDs were calibrated for dose and used to acquire images of delivered fields.
Ricketts, K +10 more
exaly +8 more sources
Improving patient treatment accuracy using transit dosimetry with Electronic Portal Imaging Device images and deep learning [PDF]
Physics and Imaging in Radiation OncologyBackground and Purpose:: Electronic portal imaging devices (EPID) can be utilized for transit in vivo dosimetry (IVD). A major limitation of standard amorphous Silicon EPID detectors for usage IVD is their non-linear detector response to water equivalent
Lorenzo Marini +9 more
doaj +3 more sources
Evaluation of Daily CT for EPID-Based Transit In Vivo Dosimetry [PDF]
Frontiers in Oncology, 2021 PurposeThe difference in anatomical structure and positioning between planning and treatment may lead to bias in electronic portal image device (EPID)-based in vivo dosimetry calculations. The purpose of this study was to use daily CT instead of planning
Bin Feng +20 more
doaj +4 more sources
Transit dosimetry of stereotactic body radiotherapy treatments with electronic portal dosimetry device in patient with spinal implant [PDF]
Physical and Engineering Sciences in Medicine, 2022 Abstract Aim In recent years, the use of the Electronic Portal Imaging Device (EPID) as an in vivo dosimeter has become widespread. However, reports of EPID for stereotactic body radiotherapy (SBRT) applications is scarce. There is no data on this topic especially when there are high-density materials in the radiation field.
Yağız Yedekci +4 more
semanticscholar +4 more sources
In vivo transit dosimetry methodology for whole breast intensity modulated radiation therapy [PDF]
Journal of Applied Clinical Medical PhysicsBackground In vivo transit dosimetry using an electronic portal imaging device (EPID‐IVTD) is an important tool for verifying the accuracy of radiation therapy treatments.
Giuseppina R Borzi +2 more
exaly +3 more sources
Determining optimal transit dosimetry gamma parameter values for the detection of failure modes using receiver operating curve analysis. [PDF]
J Appl Clin Med PhysPurpose To determine the gamma criteria that maximize the sensitivity and specificity of the transit dosimetry software PerFRACTION (Sun Nuclear Corporation) under five possible failure modes in external beam radiotherapy.
Sánchez-Artuñedo D +4 more
europepmc +2 more sources