Results 71 to 80 of about 7,739 (203)

Dosimetric correlation between exit dose maps and anatomical changes in head and neck cancer treatment on Halcyon‐E: A gamma analysis approach

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background Head and neck cancer (HNC) has a high incidence in Brazil. Although Image‐Guided Radiation Therapy (IGRT) improves treatment precision, anatomical changes during the treatment course may compromise dose distribution and require replanning.
Jayane Julia Pereira da Silva, Caio Weber Mendanha Ribeiro, Jaime Luiz Ludwig, Daniela Rocha Medrado, Bruno Nunes Melo da Silva, Ayane Cristine Alves Sarmento, Edilmar de Moura Santos   +6 more
wiley   +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

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

Dosimetric properties of fluoroscopic EPID for transit dosimetry

, 2015
The aim of this work was to evaluate dose response of fluoroscopic EPID for transit dosimetry applications. Properties studied included warm up time, build-up thickness evaluation, dose history, linearity, stability, and short and long-term ...
Aghamiri, S., Mahdavi, S., Anvari, A., Mohammadi, M., Alaei, P.   +4 more
core   +1 more source

An EPID-based method for comprehensive verification of gantry, EPID and the MLC carriage positional accuracy in Varian linacs during arc treatments [PDF]

, 2014
Background]In modern radiotherapy, it is crucial to monitor the performance of all linac components including gantry, collimation system and electronic portal imaging device (EPID) during arc deliveries.
Conor K McGarry, Michael P Barnes, McGarry, Conor, Ebert, Martin A, Mahsheed Sabet, Pejman Rowshanfarzad, Martin A Ebert, Rowshanfarzad, Pejman, Barnes, Michael P, Sabet, Mahsheed   +9 more
core   +2 more sources

Clinical implementation and performance evaluation of a motorized MR‐compatible OCTAVIUS 4D system for SBRT patient‐specific QA on a 1.5 T MR‐LINAC

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background Magnetic resonance–guided radiotherapy using 1.5 T MR‐LINAC systems introduces specific constraints for patient‐specific quality assurance (PSQA), requiring MR‐compatible dosimetric devices capable of accurate three‐dimensional dose verification.
Clement Chevillard, Marie Blanchet, Cyrielle Mella, Robin Sauvinet, Rezart Belshi, Ivan Taranenko   +5 more
wiley   +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  

MO-FG-202-07: Real-Time EPID-Based Detection Metric For VMAT Delivery Errors.

, 2016
PURPOSE To create and test an accurate EPID-frame-based VMAT QA metric to detect gross dose errors in real-time and to provide information about the source of error. METHODS A Swiss cheese model was created for an EPID-based real-time QA process.
Siebers, J V, Passarge, M, Manser, Peter, Fix, Michael, Stampanoni, M F M   +4 more
core   +1 more source

A Review of the Australian MRI Linac Program: From Pie in the Sky to Research Milestone

Journal of Medical Imaging and Radiation Oncology, Volume 70, Issue 5, Page 477-486, August 2026.
ABSTRACT The Australian Magnetic Resonance Imaging (MRI) Linear Accelerator program (MRI linac) was a major research project that aimed to build and test a unique MRI linac prototype for cancer treatment. It aimed to improve radiotherapy anatomical targeting and explore physiological targeting. The purpose of this report is to summarise the development
Michael Bernard Barton, Geoffrey Paul Delaney, Peter Greer, Lois Holloway, Peter Metcalfe, Robba Rai, Trang Pham, William S. Price, David Waddington, Stuart Crozier, Paul Keall   +10 more
wiley   +1 more source

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