Results 51 to 60 of about 4,457 (170)

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

NbRD21 protease controls receptor kinase homeostasis in Nicotiana benthamiana

New Phytologist, Volume 251, Issue 5, Page 2741-2752, September 2026.
Proteomic analysis revealed that receptor kinases (red) accumulate higher in rd21 knockout Nicotiana benthamiana plants. Summary RD21‐like proteases are papain‐like cysteine proteases with a C‐terminal granulin domain that are abundant and ubiquitous in angiosperms and have often been implicated in immunity.
Alice Godson, Lauren Eddie, Mariana Schuster, Kaijie Zheng, Reka Toth, Yuge Li, Tianrun Li, Jie Huang, Farnusch Kaschani, Philippe V. Jutras, Jiorgos Kourelis, Markus Kaiser, Tolga Bozkurt, Renier A. L. Van der Hoorn   +13 more
wiley   +1 more source

Commissioning and clinical positioning assessment of a novel surface‐guided radiation therapy (SGRT) system at a C‐Arm linear accelerator

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background Surface‐guided radiation therapy (SGRT) has been increasingly adopted in modern radiotherapy, enabling radiation‐dose‐free, marker‐free patient positioning with high accuracy. A novel SGRT system, LUNA 3D (LAP, Lüneburg, Germany), featuring a browser‐based interface, GPU‐accelerated surface reconstruction, high frame rates, large ...
Hui Khee Looe, Niklas Felix Hendrik Bartner, Björn Poppe, Kay C. Willborn   +3 more
wiley   +1 more source

Sarcoidosis pulmonar y cáncer de mama, a propósito de un caso [PDF]

Revista SOCAMPAR, 2020
Las enfermedades pulmonares intersticiales difusas constituyen un grupo heterogéneo de entidades clinicopatológicas que tienen manifestaciones clínicas, radiológicas y espirométricas similares, afectando de forma difusa a la vía aérea inferior.
Gutiérrez González N, Ceballos Romero JC, Martínez Jiménez AJ, García Guerra JA, Hurtado Fuentes Á, Martínez Villar C, Sánchez SimónTalero R   +6 more
doaj  

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 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

An Analysis of Quality Assurance for Intensity-modulated Radiation Therapy and Volumetric Modulated Arc Therapy Treatment Plans Using Two Dosimetric Methods: The arcCHECK System and EPIbeam Based Dosimetric Approach

Journal of Medical Physics
Aim: The current study is to assess and compare the performance of an electronic portal imaging device (EPID)-based dosimetry system electronic portal imaging beam (EPIbeam) and a three-dimensional (3D) diode array system (ArcCHECK) using various gamma ...
Ajay Katake, Lalit Kumar, Balbir Singh, Amit Sharma, Deepak Basandrai   +4 more
doaj   +1 more source

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

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