Results 41 to 50 of about 4,457 (170)

Dose calibration of EPIDs for segmented IMRT dosimetry [PDF]

Journal of Applied Clinical Medical Physics, 2014
The purpose of this study was to investigate the dose response of amorphous silicon (a‐Si) electronic portal imaging devices (EPIDs) under different acquisition settings for both open jaw defined fields and segmented intensity‐modulated radiation therapy (IMRT) fields. Four different EPIDs were used.
Deshpande, S, Xing, A, Holloway, L, Metcalfe, P, Vial, P   +4 more
openaire   +3 more sources

EPID-Based Setup Error Correction in Head and Neck Radiotherapy [PDF]

Iranian Journal of Medical Physics
Introduction: This study introduces and evaluates a novel optimized averaging method for Electronic Portal Imaging Device (EPID)-based setup corrections, comparing it with conventional approaches.
Mohamad Pursamimi, Mahdi Ghorbani, Mehdi Khosravi, Seyed Mohammad Hosseini, Ahmad Shakeri, Sibusiso Mdletshe   +5 more
doaj   +1 more source

EPID – a useful interfraction QC tool

Polish Journal of Medical Physics and Engineering, 2019
Abstract Biomedical accelerators used in radiotherapy are equipped with detector arrays which are commonly used to obtain the image of patient position during the treatment session. These devices use both kilovolt and megavolt x-ray beams.
Klimas, Aleksandra, Grządziel, Aleksandra, Płaza, Dominika, Bekman, Barbara, Woźniak, Bożena, Dolla, Łukasz, Osewski, Wojciech, Paściak, Paweł, Wendykier, Jacek, Ślosarek, Krzysztof   +9 more
openaire   +3 more sources

Carrion ecology: concepts, interdisciplinary synthesis, and perspectives

Biological Reviews, EarlyView.
ABSTRACT Carrion is a ubiquitous resource in both terrestrial and aquatic ecosystems, yet it has long been overlooked in ecological research. Over the past two decades, studies on carrion and the many organisms that exploit it have flourished, revealing not only wide‐ranging ecological functions but also significance far beyond ecology.
Marcos Moleón, José A. Sánchez‐Zapata, Travis L. DeVault, Wayne M. Getz, Zebensui Morales‐Reyes, Daniel Redondo‐Gómez, Lara Naves‐Alegre, Solange A. Batista‐Nunes, Esther Sebastián‐González, Juan M. Pérez‐García, Kelly A. Waters, Thijs van Overveld, Craig Smith, Nuria Selva, Thomas A. Schlacher, Graeme Ruxton, Jesús Rodríguez, Martina‐M. Quaggiotto, Paula L. Perrig, Norman Owen‐Smith, Thomas M. Newsome, Isabel Navas, Yoshihiro Nakashima, Ana Mateos, Carlos Martínez‐Carrasco, Daniel Martín‐Vega, Berta Martín‐López, Antoni Margalida, Sergio A. Lambertucci, Adam Kane, Kevin Healy, Akane Hashizume, Antonio J. García‐Fernández, José A. Donázar, M. Eric Benbow, James C. Beasley, Philip S. Barton, Kathleen A. Alexander, Eneko Arrondo   +38 more
wiley   +1 more source

Australian Society of Medical Imaging and Radiation Therapy Image Registration in Radiation Therapy Position Paper

Journal of Medical Radiation Sciences, EarlyView.
The ASMIRT Image Registration Working Party outlines the critical role of radiation therapists in performing, assessing and documenting rigid and deformable image registration across treatment planning, delivery and adaptive workflows. The position paper emphasises consistent nomenclature, robust QA processes, strong collaboration with diagnostic ...
Tamara Barry, Huong Nguyen, Laurel Schmidt, Kate Stewart, Nigel Anderson   +4 more
wiley   +1 more source

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

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

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

TREATMENT OF OSTEOPOROSIS IN REAL CLINICAL PRACTICE: FREQUENCY OF PRESCRIPTIONS AND THERAPY ADHERENCE WITHIN THE FIRST YEAR AFTER OSTEOPOROTIC FRACTURE

Научно-практическая ревматология, 2011
Objective: to estimate the frequency of prescription for antiosteoporotic agents in real clinical practice and treatment adherence within a year after experienced low-trauma osteoporotic fracture (LOF). Subjects and methods.
O. V. Dobrovolskaya, N. V. Toroptsova, O. A. Nikitinskaya, N. V. Demin   +3 more
doaj   +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

A drought stress‐induced MYB transcription factor regulates pavement cell shape in leaves of European aspen (Populus tremula)

New Phytologist, Volume 251, Issue 5, Page 2688-2705, September 2026.
MYB305a promoter expression increases in pavement cells as they grow and acquire their complex shape. Summary Leaf pavement cells of many plant species develop jigsaw puzzle‐like shapes in which neighboring cells interdigitate, providing an ideal model for the study of cell shape regulation.
Sijia Liu, Siamsa M. Doyle, Kathryn M. Robinson, Zahra Rahneshan, Nathaniel R. Street, Stéphanie Robert   +5 more
wiley   +1 more source