نتایج جستجو برای: radiation risk
تعداد نتایج: 1166476 فیلتر نتایج به سال:
introduction radioactive materials naturally exist in the world. indeed, approximately 82% of human-absorbed radiation doses, which are out of human control, arise from natural sources of radiation including cosmic, terrestrial, and exposure through inhalation or ingestion. thus, the aim of the present study was to estimate health risk, as well as the effective and organ doses from naturally oc...
it is definitely necessary to understand the concept and behavior of causation of life insurance policies and its determinants for insurance managers, regulators, and customers. for insurance managers, the profitability and liquidity of insurers can be increasingly influenced by the number of causation through costs, adverse selection, and cash surrender values. therefore, causation is a materi...
the perioperative imaging of a pregnant woman presents a unique challenge to orthopaedics surgeon as concern about the radiation risk to the embryo or fetus. this article highlights effect of radiation exposure on foetus.i would like to discuss about the amount of radiation exposure in a pregnant woman during fluoroscopic guided closed femoral interlock nailing as radiation has significant canc...
Background: Background gamma radiation levels vary in different locations and depended on many factors such as radiation properties of soil, building materials as well as construction types which human lives on it. People are always exposed to ionizing radiation, which could badly influence their health. The aim of this study was to evaluate the background gamma-ray dose rate and the estimated ...
introduction: nowadays ionizing radiation has a considerable contribution in medical diagnostic and treatment. using ionizing radiation is increasing rapidly, so biological effects of ionizing radiation should be considered more. x-rays in the range of diagnostic radiology have hazardous effects and risks that are defined as random effects. these effects obey the lnt hypothesis that occur at lo...
results the electrophysiology laboratory staff received higher doses of ionizing radiation (17.2 ± 11.9 msv; p < 0.001). there was a significant positive correlation between the years of working experience and effective dose in the lens (p < 0.001). in general, our findings showed that the incidence of lens opacity was 79% (95% ci, 69.9-88.1) in participants with exposure (the case group) and o...
In this article, we used SuperMc 3.2 Software for have studied two models of welding radiographic techniques that are more common in radiographs (Dobell Walls and Single Image (DWSI) and Single Wall and Single Image (SWSI) technique) , without the use of a collimator and in terms of radiation risk and radiation safety. According to results, Due to the lack of a collimator, the risk of radiation...
The perioperative imaging of a pregnant woman presents a unique challenge to orthopaedics surgeon as concern about the radiation risk to the embryo or fetus. This article highlights effect of radiation exposure on foetus.I would like to discuss about the amount of radiation exposure in a pregnant woman during fluoroscopic guided closed femoral Interlock nailing as radiation has significant...
The increase in ionizing radiation (IR) applications, especially nuclear, has been followed by the growth of public concern for the potential associated risks. The public’s perception of such risks is often based on the philosophy that IR is harmful at any exposure level. On the other hand, although radiation workers have knowledge about the nature of IR and its potential health effects, the re...
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