نتایج جستجو برای: radiation exposure rate
تعداد نتایج: 1435275 فیلتر نتایج به سال:
Objective(s) The possible risks of radio-frequency electromagnetic fields (EMF) for the living organisms and human body are a growing concern for our society. In this study, we examined the possibility of changes in working memory and hippocampal histological characteristics effects in mice brain following whole body exposure to microwave radiation. Materials and Methods During gestation per...
Background: Finding a suitable method for rapid, accurate and reliable estimation of absorbed dose has high priority in management of the radiation exposed persons. Shortly after radiation exposure, apoptosis is a major detriment in proliferative tissues such as the hematopoietic system. Therefore, quantification of apoptosis in these tissues could be useful for rapid estimation of radiation ex...
Although using ionizing radiation is an accepted part of medical profession for patients’ treatment and diagnosis, and despite its benefits, from safety point of view, it can pose potential hazards for radiographers. More understanding of exposure can be an effective move towards safety enhancement of staff and reduction of exposure rate. Present study, aimed at the above mentioned goals, was c...
Effects of radiation on growth of two human tumour cell lines that survived a previous high dose, low dose-rate radionuclide exposure simulating intensive radionuclide therapy, were analyzed. The purpose was to investigate whether the survivors gained therapy induced changes in growth and radiation response. The U118MG, ParRes (parental resistant), and U373MG, ParSen (parental sensitive), gliom...
introduction: active personal dosimeters (apds) are well accepted as useful and reliable instruments for individual dosimetry measurements. apds have many advantages compared with passive dosimeters for individual external radiation dose assessments. in routine monitoring, occupational exposure is carried out for verification and demonstration of compliance with the regulatory dose limits. so, ...
Introduction: As a valuable imaging modality, Nuclear Medicine (NM) indications is raising in clinical practice. The remained portion administrated radioactive material in patients’ tissues is a critical issue, especially when the procedure is performed in hospitalized patients, where the non-radiation workers present. The aim of this study was evaluation the dose of non-radia...
The unexpected nuclear accidents have provided a challenge for scientists and engineers to develop sensitive detectors, especially for alpha radiation. Due to the high linear energy transfer value, sensors designed to detect such radiation require placement in close proximity to the radiation source. Here we report the morphological changes and optical responses of artificially designed DNA thi...
Background & Aim: Electronic and communication devices have largely become a part of our daily lives. And this has caused a growing concern with regards to the possible side-effects of exposure to the radiation of these devices on human health. To investigate the same, a research was undergone to study the "Effect of regular aerobic exercise on oxidative damage markers of lipids and protei...
BACKGROUND The C-arm fluoroscope is known as the most important equipment in pain interventions. This study was conducted to investigate the completion rate of education on radiation safety, the knowledge of radiation exposure, the use of radiation protection, and so on. METHODS Unsigned questionnaires were collected from the 27 pain physicians who applied for the final test to become an expe...
Hematopoiesis is one of the most radiosensitive system of the human organism. The intensity of effects induced by chronic radiation exposure depends on dose and dose rate. Completeness and duration of hematopoiesis recovery are determined by the intensity of changes occurring during the maximal radiation exposure and on individual radiosensitivity. Long-term (months, years) irradiation even dur...
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