Results 211 to 220 of about 298,878 (252)
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The Relative Biological Effectiveness of High-Energy Photons and Electrons
Radiology, 1964In the past decade or more, few radiobiological quantities have received as much attention as the biological effectiveness (or RBE) of high-energy photons and electrons relative to conventional 200 to 300 kvp x-rays. Many of these studies have had a clinical rather than a radiobiological objective, namely the specification of the RBE for clinical ...
W K, SINCLAIR, H I, KOHN
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The Relative Biologic Effects of X-Rays and Beta Rays
Radiology, 1955Investigations of the biologic effects of different types of ionizing radiations suggest that quantitative differences in response occur even though identical amounts of energy are absorbed per unit volume of tissue. Since the development of technics for the treatment of cancer and other diseases with radioactive isotopes, information regarding the ...
W B, SEAMAN +2 more
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Relative Biological Effectiveness: Review of a Model
1988To understand why different energy doses are necessary to bring about the same biological effect by different radiations can be considered as the crucial issue of radiation biophysics. For example, the early target theory had remained a rather abstract and ambiguous scheme until D.E.
K. Günther, W. Schulz
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Oxygen Effect, Relative Biological Effectiveness, and Linear Energy Transfer
2014Oxygen is one of the most effective dose-modifying agents. Oxygen causes “fixation” of radiation-induced DNA damage. The oxygen enhancement ratio (OER) is equal to the ratio of doses of radiation (hypoxic over oxic) required to achieve the same biological effect.
David S. Chang +4 more
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The Relative Biological Effectiveness of Attenuated Protons
1993The 250 MeV Synchrotron at Loma Linda University Medical Center has been in operation since October 1990. In this paper we will report the data collected for survival of V79 cells suspended in gelatin exposed to 100 MeV protons that are attenuated with varying thicknesses of polycarbonate plastic.
James B. Robertson +8 more
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Relative biological effectiveness of alpha particles at radon exposure
Radiation Protection Dosimetry, 2015The relative biological effectiveness (RBE) of alpha particles at radon exposure is estimated by comparison of radiation risks at external gamma exposure and radon exposure in different situations. For external gamma exposure, the BEIR VII model of radiation risk assessment was used.
M, Zhukovsky, N, Bastrikova, A, Vasilyev
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The Relative Biological Effectiveness of Fast Neutrons for Mammalian Tissues
Radiology, 1969Fast neutrons are at present being considered as a possible alternative to more conventional radiotherapy in the treatment of cancer. The relative biological effectiveness (R.B.E.) of this high linear energy transfer (L.E.T.) radiation is known to depend on the size of the dose (1,2).
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The Relative Biological Effectiveness of Fast Neutrons for Intestinal Damage
Radiology, 1970Abstract Relative biological effectiveness (RBE) of fast neutrons from the Medical Research Council cyclotron are compared to 250 kVp x rays for intestinal damage. The RBE is higher at low doses and approaches a common value of 1.9 at neutron doses above 1,000 rads.
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IV. Relative Biological Effectiveness
Journal of the International Commission on Radiation Units and Measurements, 1986openaire +2 more sources