Articles with "photon beam" as a keyword



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Characterization and evaluation of an integrated quality monitoring system for online quality assurance of external beam radiation therapy

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Published in 2017 at "Journal of Applied Clinical Medical Physics"

DOI: 10.1002/acm2.12014

Abstract: Abstract Purpose The aim of this work was to comprehensively evaluate a new large field ion chamber transmission detector, Integral Quality Monitor (IQM), for online external photon beam verification and quality assurance. The device is… read more here.

Keywords: quality; ion chamber; photon beam; beam ... See more keywords
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Determination of the electronic portal imaging device pixel-sensitivity-map for quality assurance applications. Part 2: Photon beam dependence.

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Published in 2022 at "Journal of applied clinical medical physics"

DOI: 10.1002/acm2.13602

Abstract: PURPOSE The EPID PSM is a useful EPID calibration method for QA applications. The dependence of the EPID PSM on the photon beam used to acquire it has been investigated in this study for the… read more here.

Keywords: method; photon beam; beam dependence; psm ... See more keywords
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Analysis of stabilization of photon beam softening with off-axis distance for filtration system enhancement to increase dosimetry in radiotherapy

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Published in 2020 at "Journal of King Saud University - Science"

DOI: 10.1016/j.jksus.2018.09.006

Abstract: Abstract Beam softening is depending on the material atomic number and photon beam energy for photon beam filtration; the filtration quality is essential to producing a clinical beam in external radiotherapy. Beam softening analysis is… read more here.

Keywords: photon beam; axis distance; beam softening; beam ... See more keywords
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Monte Carlo Simulation of 6 MV Flattening Filter Free Photon Beam of True Beam STx LINAC at Songklanagarind Hospital

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Published in 2017 at "Sains Malaysiana"

DOI: 10.17576/jsm-2017-4609-08

Abstract: In this study, 6 MV photon beam of TrueBeam STx Varian LINAC with Flattening Filter Free (FFF) was simulated using PRIMO code. The depth dose profiles for various jaws open fields and cross beam profiles… read more here.

Keywords: flattening filter; filter free; photon beam; simulation ... See more keywords
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From Photon Beam to Accelerated Particle Beam: Antimetastasis Effect of Combining Radiotherapy With Immunotherapy

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Published in 2022 at "Frontiers in Public Health"

DOI: 10.3389/fpubh.2022.847119

Abstract: Cancer is one of the major diseases that seriously threaten the human health. Radiotherapy is a common treatment for cancer. It is noninvasive and retains the functions of the organ where the tumor is located.… read more here.

Keywords: beam radiotherapy; beam; radiotherapy; particle beam ... See more keywords
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Depth Dose Enhancement on Flattening-Filter-Free Photon Beam: A Monte Carlo Study in Nanoparticle-Enhanced Radiotherapy

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Published in 2020 at "Applied Sciences"

DOI: 10.3390/app10207052

Abstract: The aim of this study is to investigate the variations of depth dose enhancement (DDE) on different nanoparticle (NP) variables, when using the flattening-filter-free (FFF) photon beam in nanoparticle-enhanced radiotherapy. Monte Carlo simulation under a… read more here.

Keywords: photon; flattening filter; nanoparticle; photon beam ... See more keywords
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High Dose Local Photon Irradiation Is Crucial in Anti-CTLA-4 Antibody Therapy to Enhance the Abscopal Response in a Murine Pancreatic Carcinoma Model

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Published in 2022 at "Cancers"

DOI: 10.3390/cancers14092087

Abstract: Simple Summary Pancreatic cancer is an extremely treatment-resistant neoplasm to chemotherapy and immunotherapy. The combination of photon beam irradiation and anti-CTLA-4 antibody (C4) for the anti-tumor effect enhancement at local and distant tumors (abscopal tumors)… read more here.

Keywords: combination; therapy; photon beam; high dose ... See more keywords
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In Vitro Effects of Photon Beam and Carbon Ion Radiotherapy on the Perineural Invasion of Two Cell Lines of Neurotropic Tumours

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Published in 2023 at "Life"

DOI: 10.3390/life13030794

Abstract: Primary mucosal melanoma (PMM) and pancreatic ductal adenocarcinoma (PDAC) are two aggressive malignancies, characterized by intrinsic radio-chemoresistance and neurotropism, a histological feature resulting in frequent perineural invasion (PNI), supported by neurotrophic factors secreted in the… read more here.

Keywords: cell; carbon ion; photon beam; ion radiotherapy ... See more keywords
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Tissue composition effect on dose distribution in radiotherapy with a 6 MV photon beam of a medical linac

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Published in 2019 at "Journal of Cancer Research and Therapeutics"

DOI: 10.4103/jcrt.jcrt_706_16

Abstract: Aim: The aim of this study is to evaluate soft-tissue composition effect on dose distribution for various soft tissues in radiotherapy with a 6 MV photon beam of a medical linac. Background: The compositions of… read more here.

Keywords: photon beam; soft tissues; tissue equivalent; tissue ... See more keywords
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Determination of Dose Distributions by Monte-Carlo Simulation of 6 MV Photon Beam of Varian VitalBeam Accelerator Using Geant4 Multithreaded Code

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Published in 2022 at "Journal of Medical Physics"

DOI: 10.4103/jmp.jmp_139_21

Abstract: Background: Accuracy of dose delivery in radiation therapy is a primary requirement for effective cancer treatment. In practice, dose delivery accuracy of ±5% is desired. To achieve this accuracy level, an accurate method for calculating… read more here.

Keywords: monte carlo; beam; accuracy; dose distributions ... See more keywords