Results 1 to 10 of about 585,390 (295)

Dose Enhancement for the Flattening-Filter-Free and Flattening-Filter Photon Beams in Nanoparticle-Enhanced Radiotherapy: A Monte Carlo Phantom Study [PDF]

open access: yesNanomaterials, 2020
Monte Carlo simulations were used to predict the dose enhancement ratio (DER) using the flattening-filter-free (FFF) and flattening-filter (FF) photon beams in prostate nanoparticle-enhanced radiotherapy, with multiple variables such as nanoparticle ...
Stefano Martelli, James C L Chow
doaj   +4 more sources

A Monte Carlo study on dose enhancement and photon contamination production by various nanoparticles in electron mode of a medical linac [PDF]

open access: yesNukleonika, 2015
The aim of this study is the evaluation of electron dose enhancement and photon contamination production by various nanoparticles in the electron mode of a medical linac. MCNPX Monte Carlo code was used for simulation of Siemens Primus linac as well as a
Toossi Mohammad Taghi Bahreyni   +4 more
doaj   +4 more sources

Depth Dose Enhancement in Orthovoltage Nanoparticle-Enhanced Radiotherapy: A Monte Carlo Phantom Study [PDF]

open access: yesMicromachines, 2023
Background: This study was to examine the depth dose enhancement in orthovoltage nanoparticle-enhanced radiotherapy for skin treatment by investigating the impact of various photon beam energies, nanoparticle materials, and nanoparticle concentrations ...
James C. L. Chow, Sama Jubran
doaj   +2 more sources

10B Concentration, Phantom Size and Tumor Location Dependent Dose Enhancement and Neutron Spectra in Boron Neutron Capture Therapy [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2019
Background: The amount of average dose enhancement in tumor loaded with 10B may vary due to various factors in boron neutron capture therapy.Objective: This study aims to evaluate dose enhancement in tumor loaded with 10B under influence of various ...
Gh Izadi Vasafi, M M Firoozabadi
doaj   +2 more sources

Dose Enhancement Due to Various Nanoparticles Irradiated by Megavoltage Photon Beams: A Review Study [PDF]

open access: yesJournal of Medical Physics
Nowadays, the use of nanotechnology in cancer treatment offers exciting possibilities, including the enhanced delivery of doses inside the target, leading to a higher therapeutic ratio. The aim of this study is to review the dose enhancement factor (DEF)
Sepideh Ghalamchi   +4 more
doaj   +2 more sources

An Optimized Method for Evaluating the Potential Gd-Nanoparticle Dose Enhancement Produced by Electronic Brachytherapy [PDF]

open access: yesNanomaterials
This work reports an optimized method to experimentally quantify the Gd-nanoparticle dose enhancement generated by electronic brachytherapy. The dose enhancement was evaluated considering energy beams of 50 kVp and 70 kVp, determining the Gd-nanoparticle
Melani Fuentealba   +5 more
doaj   +2 more sources

Study on the dose enhancement of gold nanoparticles when exposed to clinical electron, proton, and alpha particle beams by means of Geant4

open access: yesJournal of Medical Signals and Sensors, 2020
Background: Various factors effecting deposited energy and dose enhancement ratio (DER) in the simplified model of cell caused by the interaction of a cluster of gold nanoparticles (GNPs) with electron beams were assessed, and the results were compared ...
Mehran Mohseni   +5 more
doaj   +2 more sources

Enhancement of Bio-Protective Functions by Low Dose/Dose-Rate Radiation

open access: yesDose-Response, 2006
Effects of low-dose-rate gamma-irradiation on the process of tumorigenesis were investigated in mice treated with a carcinogenic agent or irradiated with high dose X-rays at a high dose rate.
Kazuo Sakai   +2 more
doaj   +3 more sources

XMEA: A New Hybrid Diamond Multielectrode Array for the In Situ Assessment of the Radiation Dose Enhancement by Nanoparticles [PDF]

open access: yesSensors
This work presents a novel multielectrode array (MEA) to quantitatively assess the dose enhancement factor (DEF) produced in a medium by embedded nanoparticles.
Patricia Nicolucci   +5 more
doaj   +2 more sources

Dose enhancement effects of gold nanoparticles specifically targeting RNA in breast cancer cells. [PDF]

open access: yesPLoS ONE, 2018
Localization microscopy has shown to be capable of systematic investigations on the arrangement and counting of cellular uptake of gold nanoparticles (GNP) with nanometer resolution. In this article, we show that the application of specially modified RNA
Georg Hildenbrand   +10 more
doaj   +2 more sources

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