Results 201 to 210 of about 298,878 (252)

Tritium Radiobiology and Relative Biological Effectiveness

Health Physics, 1993
During the past decade, a large number of radiobiological studies have become available for tritium--many of them focusing on the relative biological effectiveness of tritium beta rays. These and previous studies indicate that tritium in body water produces the same spectrum of radiogenic effects (e.g., cancer, genetic effects, developmental ...
T, Straume, A L, Carsten
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Relative Biological Effectiveness of 17 MeV Electrons

The British Journal of Radiology, 1953
An electron beam with energy adjustable up to 22 MeV has been developed with sufficient intensity and control for biological experimentation and therapeutic applications (Laughlin, Ovadia, Beattle, Henderson, Harvey and Haas, in press). Various experiments have been in progress to evaluate the biological effects of such electrons on animals and human ...
M K, AUSTIN, J S, LAUGHLIN, H, QUASTLER
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The Relative Biological Effectiveness of Fast Neutrons in Mice

Radiation Research, 1956
During the past fifteen years a number of experiments have been done to compare the biological effectiveness of neutron and electromagnetic radiations; however, no consistent pattern has been evident in the various organisms and different radiations used.
R E, CARTER, V P, BOND, P H, SEYMOUR
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The relative biological effectiveness of out-of-field dose

Physics in Medicine and Biology, 2015
using simulations and models derived from existing literature, this work investigates relative biological effectiveness (RBE) for out-of-field radiation and attempts to quantify the relative magnitudes of different contributing phenomena (spectral, bystander, and low dose hypersensitivity effects).
Michael, Balderson, Brandon, Koger, Charles, Kirkby   +2 more
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Relative Biological Effectiveness of Internal Emitters

Radiology, 1956
Permissible levels of exposure to radioactive materials have been based in large part upon two sets of comparisons. In the first, the radiotoxic hazards of the various isotopes are evaluated relative to radium in experimental animals. In the second, extrapolations are made to man through radium as the common link, since the latent effects of that ...
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Relative biological effectiveness of ^99m Tc radiopharmaceuticals

Medical Physics, 1994
The radiotoxicity of three 99mTc-labeled compounds is investigated using spermatogenesis in mouse testis as the experimental model, and spermatogonial cell survival as the biological end point. The radiopharmaceuticals studied are pertechnetate (99mTcO4-), pyrophosphate (99mTc-PYP), and hydroxyethylene diphosphate (99mTc-HDP).
V R, Narra, K S, Sastry, S M, Goddu, R W, Howell, S E, Strand, D V, Rao   +5 more
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Relative Biological Effectiveness for Neutron Carcinogenesis in Monkeys and Rats

Radiation Research, 1991
The risks of total-body irradiation with large doses of X rays (average dose 6.7 Gy) and fission neutrons (average dose 3.4 Gy) were investigated by keeping a group of long-term surviving monkeys from an experiment on acute effects under continuous observation.
Broerse, J.J., Bekkum, D.W. van, Zoetelief, J., Zurcher, C.   +3 more
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Toxicity and Relative Biological Effectiveness of Alpha Emitting Radioimmunoconjugates

Current Radiopharmaceuticalse, 2011
Radioimmunotherapy based on α-particle emitters has excellent properties as a treatment against micrometastatic and disseminated cancers because of the short path length (50 - 80 μm) and high linear energy transfer (∼ 100 keV/ μm). Alpha-particles produce clustered DNA double-strand breaks and highly reactive hydroxyl radicals when hitting biological ...
Jostein, Dahle, Nasir, Abbas, Øyvind S, Bruland, Roy H, Larsen   +3 more
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The relative biological effectiveness of I-125 and Pd-103

International Journal of Radiation Oncology*Biology*Physics, 1995
To determine the relative biological effectiveness (RBE) of I-125 and Pd-103 relative to Co-60.A cell line REC:ras, derived from rat embryo cells, was used. Cells in exponential or plateau phase were irradiated at dose rates of about 0.07 Gy/h and 0.14 Gy/h.
C C, Ling, W X, Li, L L, Anderson
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Relative biological effectiveness of proton beams in clinical therapy

Radiotherapy and Oncology, 1999
In clinical proton beam radiation therapy, an RBE of 1.1 relative to megavoltage X-rays is currently being employed at most treatment centers. This RBE pertains to radiation in the spread out Bragg-peak (SOBP) for all tissue systems, all dose levels per fraction and all proton beam energies. As the number of centers and treatment sites for which proton
L E, Gerweck, S V, Kozin
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