Results 31 to 40 of about 7,739 (203)

Use of Amorphous Silicon (ASi) Electronic Portal Imaging Devices for Other applications for Linear Accelerator Quality Assurance [PDF]

Iranian Journal of Medical Physics, 2021
Introduction: The success of radiation therapy depends critically on the accuracy of patient alignment in treatment position day after day. The primary use for Electronic portal imaging devices (EPIDs) is to monitor patient position during daily ...
Gena Mohamed, Khaled M. El-Shahat, Mahmoud Salem, Atef El-Taher   +3 more
doaj   +1 more source

Evaluation of relative transmitted dose for a step and shoot head and neck intensity modulated radiation therapy using a scanning liquid ionization chamber electronic portal imaging device

Journal of Medical Physics, 2012
The dose delivery verification for a head and neck static intensity modulated radiation therapy (IMRT) case using a scanning liquid ionization chamber electronic portal imaging device (SLIC-EPID) was investigated.
Mohammad Mohammadi, Eva Bezak
doaj   +1 more source

Investigating the effectiveness of monitoring relevant variations during IMRT and VMAT treatments by EPID-based 3D in vivo verification performed using planning CTs.

PLoS ONE, 2019
PURPOSE:The goal of this study was to investigate the effectiveness of monitoring relevant variations during treatments for electronic portal imaging device (EPID)-based 3D in vivo verification performed using planning CTs.
Yinghui Li, Jinhan Zhu, Jinping Shi, Lixin Chen, Xiaowei Liu   +4 more
doaj   +1 more source

Perbandingan Verifikasi Akurasi Posisi Pasien Radioterapi Secara Manual dan Semiotomatis Berbasis Citra DRR/EPID

Indonesian Journal of Cancer, 2016
Radiotherapy is one of common treatment modality for Nasopharyngeal Cancer. The development of intensity modulated radiotherapy (IMRT technique) gives satisfactory results in the nasopharyngeal cancer treatment, both clinically and dosimetry.
SUSI NOFRIDIANITA
doaj   +1 more source

Comparison of electronic portal imaging device-based Winston–Lutz analysis software

South African Journal of Oncology
Background: Stereotactic radiosurgery (SRS) with a linear accelerator requires submillimetre geometric accuracy. The Winston–Lutz (WL) test verifies coincidence among radiation, mechanical, and imaging isocentres.
Hein Fourie, Carolien de Ridder, Sakhele Shiba   +2 more
doaj   +1 more source

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

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

Dosimetric properties of an amorphous silicon EPID for verification of modulated electron radiotherapy

, 2013
Purpose: To investigate the dosimetric properties of an electronic portal imaging device (EPID) for electron beam detection and to evaluate its potential for quality assurance (QA) of modulated electron radiotherapy (MERT).
Henzen, Dominik, Favre, Pascal, Stefan Scheib, Daniel Vetterli, Dominik Henzen, Morf, Daniel, Fix, Michael K., Daniel Morf, Pascal Favre, Michael K. Fix, Scheib, Stefan, Vetterli, Daniel, Manser, Peter, Peter Manser, Chatelain, Cécile, Cécile Chatelain   +15 more
core   +1 more source

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

Four-Dimensional In Vivo Dosimetry By Dose Reconstruction Using Continuous Epid Images And Phase Sorting Method

, 2023
In vivo dosimetry is widely used for patient specific dose evaluation and treatment verification in external beam radiation therapy (EBRT). There is a growing interest in using an electronic portal imaging device (EPID) for in vivo dosimetry, by ...
NC DOCKS at East Carolina University, Yoon, JiHyung   +1 more
core