Results 271 to 280 of about 6,281,328 (344)

ICRP Publication 144: Dose Coefficients for External Exposures to Environmental Sources

Annals of the ICRP, 2020
This publication presents radionuclide-specific organ and effective doserate coefficients for members of the public resulting from environmental external exposures to radionuclide emissions of both photons and electrons, calculated using computational ...
N. Petoussi-Henss, D. Satoh, A. Endo, K. Eckerman, W. Bolch, J. Hunt, J. Jansen, C.H. Kim, C. Lee, K. Saito, H. Schlattl, Y.S. Yeom, S. Yoo   +12 more
semanticscholar   +1 more source

External β-Doses from Radioactive Fallout

Health Physics, 1959
Information is presented on external beta -radiation doses from fall- out material, and some evaluation of the biological hazard is made. A brief review is given of past laboratory data on external radiation exposures and their effects upon the skin. Consideration is given to estimating potential external beta -doses from fallout based on field data ...
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External beam radiotherapy dose response of prostate cancer

International Journal of Radiation Oncology*Biology*Physics, 1997
To determine the external beam radiotherapy dose response of palpable Stage T1-T4, mostly Nx, patients with adenocarcinoma of the prostate.There were 938 men consecutively treated between 1987 and 1995 who had pretreatment prostate specific antigen (PSA) levels.
A, Pollack, G K, Zagars
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EXTERNAL DOSES TO HUMANS FROM 137Cs IN SOIL

Health Physics, 2006
Calculations of absorbed doses in organs of the human body and the total effective dose due to Cs in soil as a source of external exposure are presented in this work. Calculations were done using the MCNP-4B software package. The assumption was made that photons with an energy of 662 keV are emitted in a cylindrical volumetric source in soil up to the ...
D, Krstić, D, Nikezić
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Dose-rate effects in external beam radiotherapy redux

Radiotherapy and Oncology, 2010
Recent developments in external beam radiotherapy, both in technical advances and in clinical approaches, have prompted renewed discussions on the potential influence of dose-rate on radio-response in certain treatment scenarios. We consider the multiple factors that influence the dose-rate effect, e.g.
C Clifton, Ling, Leo E, Gerweck, Marco, Zaider, Ellen, Yorke   +3 more
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Radiation doses of Swiss population from external sources

Journal of Environmental Radioactivity, 2002
The outdoor radiation exposure of the population in Switzerland from external sources results from cosmic background as well as from natural and artificial ground radiation. The geographical distribution of these components and of the total dose rate are represented on maps consisting of 2 kmx2 km grid cells.
L, Rybach, D, Bächler, B, Bucher, G, Schwarz   +3 more
openaire   +2 more sources

Calculation of Effective Doses for External Neutrons.

Journal of Nuclear Science and Technology, 1994
Monte Carlo calculations of the effective dose, on the basis of 1CRP Publication 60, were performed for external neutrons from thermal energy to 18.3 MeV for five irradiation geometries: AP, PA, RLAT, ROT and ISO. A unisex anthropomorphic phantom and the MORSE-CG code were used in conjunction with a nuclear data set based on the JENDL-3 library.
openaire   +1 more source

Dose calculations for external photon beams in radiotherapy

Physics in Medicine and Biology, 1999
Dose calculation methods for photon beams are reviewed in the context of radiation therapy treatment planning. Following introductory summaries on photon beam characteristics and clinical requirements on dose calculations, calculation methods are described in order of increasing explicitness of particle transport.
A, Ahnesjö, M M, Aspradakis
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External dose-rate measurements based on smartphone CMOS sensors

Radiation Measurements, 2020
Abstract In the framework of the European Project CONFIDENCE („COping with uNcertainties For Improved modelling and DEcision making in Nuclear emergenCiEs“), the characterization of two applications (“RadioactivityCounter and “GammaPix”) that enable dose-rate measurements with an ordinary smartphone was carried out.
Alessia Mafodda, Clemens Woda
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External dose estimates for future inhabitants of Eniwetok Atoll

Nature, 1975
Measurements of environmental γ radiation levels on Eniwetok Atoll were combined with pertinent population distributions and expected future life styles to assess the external doses that could be received by the Marshallese people on their return to the former US nuclear weapons test site in the Pacific.
P H, Gudiksen, D E, Jones, H L, Beck, J E, McLaughlin, T P, Stuart, O D, Lynch   +5 more
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