Results 1 to 10 of about 1,766,353 (166)

Experimental design and control methods for dose rate optimization in a synchrotron‐based proton therapy beamline [PDF]

open access: yesPrecision Radiation Oncology
Background Ultra‐high dose rate radiotherapy (typically defined >40 Gy/s) has shown promise for enhanced normal tissue sparing while maintaining tumor control, termed the FLASH effect when this biological response is observed.
Jason Tang   +7 more
doaj   +2 more sources

Mapping of radioactive contamination with predetermined confidence level [PDF]

open access: yesЯдерна фізика та енергетика, 2020
Standard approaches to the construction of maps of radioactive contamination do not provide errors in map data, so such maps do not, in fact, guarantee the accuracy of the map information.
Yu. V. Khomutinin   +3 more
doaj   +1 more source

Geant4 Simulation of Precipitated Activity-to-γ-Dose Rate Conversion Factors for Radon and Thoron Decay Products

open access: yesMathematics, 2022
The results of modeling the conversion factor from rainfall-deposited unit activity of gamma-emitting radon and thoron daughter decay products to their created gamma-radiation dose rate as a function of height above the Earth’s surface using the Geant4 ...
Valentina Yakovleva   +4 more
doaj   +1 more source

FLASH Radiotherapy Using Single-Energy Proton PBS Transmission Beams for Hypofractionation Liver Cancer: Dose and Dose Rate Quantification

open access: yesFrontiers in Oncology, 2022
PurposeThis work aims to study the dose and ultra-high-dose rate characteristics of transmission proton pencil beam scanning (PBS) FLASH radiotherapy (RT) for hypofractionation liver cancer based on the parameters of a commercially available proton ...
Shouyi Wei   +10 more
doaj   +1 more source

Methods of calculation of radiation protection for operational safety optimization at working with radionuclide photon radiation sources

open access: yesEurasian Journal of Physics and Functional Materials, 2021
Operational dosimetry solves the problem of implementing the principle of optimizing radiation safety, which is closely related to regulation and justification and implies a realistic achievable reduction in the dose load on a person when using ionizing ...
D. S. Kim
doaj   +1 more source

Localization of the gamma-radiation sources using the gamma-visor [PDF]

open access: yesNuclear Technology and Radiation Protection, 2008
The search of the main gamma-radiation sources at the site of the temporary storage of solid radioactive wastes was carried out. The relative absorbed dose rates were measured for some of the gamma-sources before and after the rehabilitation procedures ...
Ivanov Kirill E.   +5 more
doaj   +1 more source

First Strike personalized predictive radioiodine prescription for inoperable metastatic differentiated thyroid cancer [PDF]

open access: yesAsia Oceania Journal of Nuclear Medicine and Biology, 2023
Objective(s): The traditional practice of empiric radioiodine (I-131) prescription is scientifically obsolete and inappropriate for inoperable metastatic differentiated thyroid cancer.
Yung Hsiang Kao
doaj   +1 more source

Effect of Gamma Radiation on Some Sperm Factors of Male Rats [PDF]

open access: yesIranian Journal of Medical Physics, 2021
Introduction: The present study investigatedthe risks of ionizing radiation on sperm counts in chronic doses and compared the findings with previous results in similar and different conditions to minimize oxidant stress on sperm parameters rather than ...
Quasy AL-Dulamey   +2 more
doaj   +1 more source

Evaluation of the gamma dose rate inside Egyptian buildings, utilizing theoretical and experimental techniques [PDF]

open access: yesNuclear Technology and Radiation Protection, 2019
The indoor low gamma dose rate exposures due to Egyptian room building materials are assessed by means of three different techniques: experimentally by using a thermoluminescent dosimeter, theoretically by using the general room model and by the Monte ...
Salama Elsayed, Soliman Hala A.
doaj   +1 more source

DOSE RATE IN A DEACTIVATED URANIUM MINE

open access: yesBrazilian Journal of Radiation Sciences, 2019
The Ore Treatment Unit is a deactivated uranium mine and milling situated in Caldas, MG, BR. Although disabled, there are still areas considered controlled and supervised from the radiological point of view.
Wagner De Souza Pereira   +6 more
doaj   +1 more source

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