Results 41 to 50 of about 4,431 (152)

A simple method to back-project isocenter dose of radiotherapy treatments using EPID transit dosimetry

Brazilian Journal of Radiation Sciences, 2017
The aim of this work was to implement a simple algorithm to evaluate isocenter dose in a phantom using the back-projected transmitted dose acquired using an Electronic Portal Imaging Device (EPID) available in a Varian Trilogy accelerator with two ...
Thiago Bernardino da Silveira, Bianca de Quadros Cerbaro, Luiz Antônio Ribeiro da Rosa   +2 more
doaj   +1 more source

Enfermedades intersticiales pulmonares relacionadas con el hábito tabáquico [PDF]

Revista SOCAMPAR, 2019
El consumo de tabaco es uno de los principales factores de riesgo relacionados con la aparición de patología pulmonar. Las enfermedades comunmente relacionadas con el tabaquismo son el cáncer de pulmón y la enfermedad pulmonar obstructiva crónica (EPOC).
Ordóñez Dios IM, Herrero González B, Sacristán Bou L, Lázaro Polo J, Bujalance Cabrera C, Rienda Moreno MA   +5 more
doaj  

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

CacheQuote: Efficiently Recovering Long-term Secrets of SGX EPID via Cache Attacks

Transactions on Cryptographic Hardware and Embedded Systems, 2018
Intel Software Guard Extensions (SGX) allows users to perform secure computation on platforms that run untrusted software. To validate that the computation is correctly initialized and that it executes on trusted hardware, SGX supports attestation ...
Fergus Dall, Gabrielle De Micheli, Thomas Eisenbarth, Daniel Genkin, Nadia Heninger, Ahmad Moghimi, Yuval Yarom   +6 more
doaj   +1 more source

Investigating the electronic portal imaging device for small radiation field measurements

Journal of Medical Physics, 2017
Purpose: With the advent of state-of-the-art treatment technologies, the use of small fields has increased, and dosimetry in small fields is highly challenging.
Arpita Agarwal, Nikhil Rastogi, K J Maria Das, S A Yoganathan, D Udayakumar, Shaleen Kumar   +5 more
doaj   +1 more source

A multi-faceted community intervention is associated with knowledge and standards of workplace mental health: the Superior Mental Wellness @ Work study

BMC Public Health, 2019
Background Poor psychosocial work environments, such as those with low psychological support and high demands, can be harmful to the mental health of workers.
Vicki L. Kristman, Jessica Lowey, Lynda Fraser, Susan Armstrong, Silva Sawula   +4 more
doaj   +1 more source

Investigation of the mechanical performance of Siemens linacs components during arc: gantry, MLC, and electronic portal imaging device

Medical Devices: Evidence and Research, 2015
Pejman Rowshanfarzad,1 Peter Häring,2 Hans L Riis,3 Sune J Zimmermann,3 Martin A Ebert1,4 1School of Physics, The University of Western Australia, Crawley, WA, Australia; 2German Cancer Research Center (DKFZ), Medical Physics in Radiation Oncology ...
Rowshanfarzad P, Häring P, Riis HL, Zimmermann SJ, Ebert MA   +4 more
doaj  

Performance optimization of the Varian aS500 EPID system

Journal of Applied Clinical Medical Physics, 2006
Today, electronic portal imaging devices (EPIDs) are widely used as a replacement to portal films for patient position verification, but the image quality is not always optimal. The general aim of this study was to optimize the acquisition parameters of an amorphous silicon EPID commercially available for clinical use in radiation therapy with the view
Berger, Lucie, François, Pascal, Gaboriaud, Geneviève, Rosenwald, Jean‐Claude   +3 more
openaire   +2 more sources

Development of a new VMAT QA framework for Mobius3D using control-point specific EPID images

Frontiers in Oncology
PurposeThis study presents novel quality assurance (QA) approach for volumetric modulated arc therapy (VMAT) that leverages frame-by-frame electronic portal imaging device (EPID) images integrated into Mobius3D for accurate three-dimensional dose ...
JaeHyun Seok, JaeHyun Seok, JaeHyun Seok, Hojin Kim, Min Cheol Han, Jihun Kim, Kwangwoo Park, Hyeonjeong Cho, Hyeonjeong Cho, Hyeonjeong Cho, Dohyeon Yoo, Jin Sung Kim, Jin Sung Kim, Jin Sung Kim   +13 more
doaj   +1 more source

Effects of the adiponectin mimetic compound ALY688 on glucose and fat metabolism in visceral and subcutaneous rat adipocytes

Adipocyte, 2020
Adiponectin regulates white adipose tissue (WAT) metabolism and promotes insulin-sensitizing and anti-atherosclerotic effects in vivo. In this context, small molecule adiponectin receptor agonists have become of great therapeutic value for the treatment ...
Daniel Da Eira, Shailee Jani, Hyekyoung Sung, Gary Sweeney, Rolando B. Ceddia   +4 more
doaj   +1 more source