Results 41 to 50 of about 7,739 (203)

A method for determining the performance of formulas for calculating the crack width and spacing in reinforced concrete elements

Structural Concrete, EarlyView.
Abstract Numerous studies have been conducted to determine the performance of formulas for calculating crack width and spacing in reinforced concrete structures. Generally, these studies pay limited attention to the application areas of those formulas and how to compare different representations of the crack width and spacing.
Anton van der Esch, Rob Wolfs, Simon Wijte   +2 more
wiley   +1 more source

Early Interaction Between Scripture, Rule of Faith, and Evolving Christian Doctrine and Tradition: A Response to Alister McGrath’s The Nature of Christian Doctrine

International Journal of Systematic Theology, EarlyView.
Abstract This response to Alister McGrath’s The Nature of Christian Doctrine examines the interplay between Scripture, the Rule of Faith, and evolving Christian doctrine and tradition. Focusing on McGrath’s critique of Lindbeck’s presentation of doctrinal modalities, the article explores how doctrinal formation involves primarily synchronic (canonical),
Tomas Bokedal
wiley   +1 more source

Beam geometry optimization and convergence mode evaluation for knowledge‐based planning of hippocampal avoidance whole‐brain radiotherapy: A cross‐platform study with quantitative scorecard assessment

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Hippocampal avoidance whole‐brain radiotherapy (HA‐WBRT) is used to treat brain metastases while preserving cognitive function by sparing the hippocampi. Volumetric modulated arc therapy (VMAT) is commonly used due to its ability to generate conformal dose distributions.
Anh Lam, Kirk Luca, Mandeep Kaur, Keyur D. Shah, Julia Seng, Kathryn Benner, Matthew Thomas, Hui‐Kuo Shu, Xiaofeng Yang, Chih‐Wei Chang, Justin Roper, Jie Ding   +11 more
wiley   +1 more source

Super-resolution imaging in a multiple layer EPID [PDF]

Biomedical Physics & Engineering Express, 2017
Abstract A new portal imager consisting of four vertically stacked conventional electronic portal imaging device layers has been constructed in pursuit of improved detective quantum efficiency. We hypothesize that super-resolution (SR) imaging can also be achieved in such a system by shifting each layer laterally ...
Haijian, Chen, Joerg, Rottmann, Stephen Sf, Yip, Daniel, Morf, Rony, Füglistaller, Josh, Star-Lack, George, Zentai, Ross, Berbeco   +7 more
openaire   +2 more sources

Sensitivity of an Elekta iView GT a-Si EPID model to delivery errors for pre-treatment verification of IMRT fields [PDF]

, 2014
A Monte Carlo model of an Elekta iViewGT amorphous silicon electronic portal imaging device (a-Si EPID) has been validated for pre-treatment verification of clinical IMRT treatment plans.
Hanlon, Peta, Fielding, Andrew, Herwiningsih, Sri   +2 more
core  

Log file‐based patient‐specific quality assurance for MR‐guided radiation therapy with comprehensive motion management

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Patient‐Specific Quality Assurance (PSQA) for Elekta Unity MR‐Linac treatments delivered under Comprehensive Motion Management (CMM) is challenging because beam gating, unexpected interruptions, and split sub‐segments introduce delivery complexities that are not fully addressed by conventional quality assurance workflows.
Kai Yuan, Matthew Man‐hin Cheung, Louis Lee   +2 more
wiley   +1 more source

Evaluation of Perkin Elmer Amorphous Silicon Electronic Portal Imaging Device for Small Photon Field Dosimetry [PDF]

Journal of Biomedical Physics and Engineering
Background: Electronic portal imaging devices (EPIDs) are applied to measure the dose and verify patients’ position.Objective: The present study aims to evaluate the performance of EPID for measuring dosimetric parameters in small photon fields.Material ...
Mohammad Haghparast, Wrya Parwaie, Mohsen Bakhshandeh, Nina Tuncel, Seied Rabi Mahdavi   +4 more
doaj   +1 more source

EVALUATION STUDY FOR ELECTRONIC PORTAL IMAGER SYSTEM DEVICE (EPID) AS QUALITY ASSURANCE AND DOSIMETRY TOOL FOR MEDICAL LINEAR ACCELERATOR MACHINE [PDF]

Assiut University Journal of Multidisciplinary Scientific Research, 2020
Portal imager system now is widely attached as verification system in many models from linear accelerator due to may be used for treatment verification instead of film in as new ear for radiotherapy.
doaj   +1 more source

A review of electronic portal imaging devices (EPIDs) [PDF]

Medical Physics, 1992
On‐line electronic portal imaging devices are beginning to come into clinical service in support of radiotherapy. A variety of technologies are being explored to provide real‐time or near real‐time images of patient anatomy within x‐ray fields during treatment on linear accelerators.
Boyer, Arthur L., Antonuk, Larry, Fenster, Aaron, Van Herk, Marcel, Meertens, Harm, Munro, Peter, Reinstein, Larry E., Wong, John   +7 more
openaire   +4 more sources

Dosimetric impact of aperture‐restricted VMAT on heart dose in breast cancer treated with regional nodal irradiation

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Volumetric modulated arc therapy (VMAT) is increasingly used for breast and chest wall (CW) treatment with regional nodal irradiation (RNI) because of its ability to sculpt dose around complex target volumes. However, VMAT can increase low‐dose radiation to surrounding normal tissues and particularly increase cardiac dose.
Anh Hong Duong, Mandeep Kaur, Sunil W. Dutta, Tsegawbizu Gebru, Jacob Adams, Mark Cicchino, Reshma Jagsi, Sheela Hanasoge, Oluwatosin Kayode, Eduard Schreibmann, Hania Al‐Hallaq, Matthew Thomas, Xiaofeng Yang, Shadab Momin, Justin Roper, Kirk Luca, Jie Ding   +16 more
wiley   +1 more source