Results 241 to 250 of about 10,282,441 (287)

What is a ‘Low Dose’ of Radiation?

International Journal of Radiation Biology, 1988
Although the expression of radiation-induced biological effects and responses may be at either the cell, organ or organism level, induction of some of these phenomena (e.g. cancer of clastogenic and genetic effects) can have their origin in the interaction of a single charged particle with the target-containing volume (TCV) of the cell, e.g.
V P, Bond, L E, Feinendegen, J, Booz
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Low dose radiation risks

The British Journal of Radiology, 2003
The 20th L H Gray Conference held in 2002 took as its general title ‘‘Radiation Cancer Analysis and Low Dose Risk Estimation’’. The purpose of the meeting was to bring together experts from a broad spectrum of disciplines, including epidemiologists, modellers, statisticians and radiation biologists to discuss new insights in radiation-induced ...
Dendy, PP, Brugmans, MJ
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Radiation risk is linear with dose at low doses

The British Journal of Radiology, 2005
This paper presents a brief argument, based on a mechanistic approach, to show that radiation risk is linear with radiation dose from zero dose up. Similarities in cellular effects lead to the assumption of a common mechanism and the DNA double strand break is identified as the crucial radiation-induced lesion.
K H, Chadwick, H P, Leenhouts
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Apoptosis induced by low-dose and low-dose-rate radiation

Cancer, 2002
It has been claimed that external radiation, as a treatment modality for malignant diseases, partly induces apoptosis. It is not known, however, whether therapeutic low-dose and low-dose-rate radiation are able to induce apoptosis.The effect of low-dose radiation on apoptosis induction in HeLa Hep2 cells was studied, and quantitation of the apoptotic ...
Homa, Mirzaie-Joniani, David, Eriksson, Ali, Sheikholvaezin, Amanda, Johansson, Per-Olov, Löfroth, Lennart, Johansson, Torgny, Stigbrand   +6 more
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Effects of Low Doses of Radiation

Health Physics, 1996
This is a brief review of what is known from experimental studies about the effects of low doses of radiation, and approaches that might improve risk estimates are discussed. The dose-response relationships for cancer induction by radiation vary markedly between tissues.
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Gridless (low radiation dose) pelvimetry

The British Journal of Radiology, 1980
Doubt remains as to the magnitude of the hazard of exposing the fetus to ionizing radiation (Burch, 1970). However, no one will dispute that the fetus should be exposed to the lowest radiation dose compatible with satisfactory radiography. We report a system of radiography for maternal pelvimetry which carries a small fetal radiation dose.
J G, Russell, A, Hufton, C, Pritchard
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Radiosensitization by diamide at low radiation doses

International Journal of Radiation Oncology*Biology*Physics, 1984
In vitro studies in this laboratory indicated that at low radiation doses (0-3 Gy), sensitization by misonidazole diminishes. We have suggested that this results from a failure of misonidazole to enhance effectively the single-hit or alpha component of cell inactivation. Our low dose assay uses a partially automated microscopic analysis procedure which
K, Ho, L, Skarsgard, I, Harrison
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RISKS OF RADIATION AT LOW DOSE RATES

The Lancet, 1981
Cancer mortality has been studied in 1110 women who worked in the U.K. with paint containing radium from 1939 to 1961. Their body contents of radium were small, but they were also irradiated externally by gamma-rays to receive absorbed dose rates of 1-4 mGy per week.
K F, Baverstock, D, Papworth, J, Vennart
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Low Dose Radiation of the Developing Brain

Science, 1963
X-irradiation administered in single doses of 10 to 40 r has a widespread effect on the developing rat brain. It first diminishes the formation of cytoplasmic basophilic material in the nerve cells and inhibits their growth. Single doses of 20 to 40 r cause permanent alterations of individual nerve cells, and interfere with their organization into ...
S P, HICKS, C J, D'AMATO
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Biological low-dose radiation effects

Mutation Research/Reviews in Genetic Toxicology, 1991
It is theorized that biological responses to ionizing radiation in the low dose range are determined according to a doubly dichotomous pattern. Energy depositions fall into 2 categories: events at thermal energy levels where they may be experienced by cells as rates even at background exposure conditions, and events at energy levels of the order of 10 ...
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