نتایج جستجو برای: radiation exposure

تعداد نتایج: 525895  

Journal: :EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology 2011
Patricia J M Best Kimberly A Skelding Roxana Mehran Alaide Chieffo Vijayalakshmi Kunadian Mina Madan Ghada W Mikhail Fina Mauri Saeko Takahashi Junko Honye Rosana Hernández-Antolín Bonnie H Weiner

Concerns regarding radiation exposure and its effects during pregnancy are often quoted as an important barrier preventing many women from pursuing a career in Interventional Cardiology. Finding the true risk of radiation exposure from performing cardiac catheterisation procedures can be challenging and guidelines for pregnancy exposure have been inadequate. The Women in Innovations group of Ca...

Journal: :Fizika i tehnika poluprovodnikov 2022

The study of the radiation hardness subterahertz source from a Gunn diode oscillator and multiplier, based on semiconductor superlattice GaAs/AlAs was continued. dependences output power frequency before after neutron irradiation are experimentally measured. dependence to with fluences 3.5·10 12 , 2.85·10 13 10 14 cm -2 has been analytically estimated. Keywords: Radiation hardness, superlattice...

Journal: :journal of biomedical physics and engineering 0
s m j mortazavi s m owji m b shojaie-fard m ghader-panah s a r mortazavi a tavakoli-golpayegani

background: the rapidly increasing use of mobile phones has led to public concerns about possible health effects of these popular communication devices. this study is an attempt to investigate the effects of radiofrequency (rf) radiation produced by gsm mobile phones on the insulin release in rats. methods: forty two female adult sprague dawley rats were randomly divided into 4 groups. group1 w...

Journal: :iranian journal of radiology 0
jung-su kim department of radiologic science, college of health science, korea university, seoul, south korea sang-wook yoon department of diagnostic radiology, cha bundang medical center, cha university, gyeonggi-do, south korea deok-nam seo department of radiologic science, college of health science, korea university, seoul, south korea so-ra nam department of radiologic science, college of health science, korea university, seoul, south korea jung-min kim department of radiologic science, college of health science, korea university, seoul, south korea; department of radiologic science, college of health science, korea university, seoul, south korea. tel: +82-2940-2577, fax: +82-29402829

conclusion despite multiple exposures, ed control is more effective if wss is performed using apmdr in the aec mode. results using apmdr, the mean number of exposures was 6.1 for ap and 6.5 for lat projections. lat projections required more exposures (6.55%) than ap projections. the mean ed was 0.6276 msv (ap) and 0.6716 msv (lat). the mean ed for lat projections was 0.6061 msv in automatic exp...

2015
Lisa J. Sudmeier Sai-Suma Samudrala Steven P. Howard Barry Ganetzky

Cranial radiation therapy (CRT) is an effective treatment for pediatric central nervous system malignancies, but survivors often suffer from neurological and neurocognitive side effects that occur many years after radiation exposure. Although the biological mechanisms underlying these deleterious side effects are incompletely understood, radiation exposure triggers an acute inflammatory respons...

Journal: :American family physician 2010
Pamela M Williams Stacy Fletcher

Pregnant women are at risk of exposure to nonionizing and ionizing radiation resulting from necessary medical procedures, workplace exposure, and diagnostic or therapeutic interventions before the pregnancy is known. Nonionizing radiation includes microwave, ultrasound, radio frequency, and electromagnetic waves. In utero exposure to nonionizing radiation is not associated with significant risk...

Journal: :iranian journal of radiation research 0
f. bouzarjomehri department of medical physics, shahid sadoughi university of medical sciences, yazd, iran v. tsapaki department of medical physics, konstantopoulio hospital, nea ionia, athens, greece

background: ultraviolet (uv) radiation is divided into three regions: uva, uvb, and uvc. both the quality and quantity of solar uv radiation vary with various factors including the elevation of the sun above the horizon, as well as absorption and scattering of uv photons by molecules in the atmosphere, notably ozone and clouds. it is clear that whereas a moderate amount of uv exposure is benefi...

ذبیح‌زاده, منصور, شمس, نسیم, غلامی, مهرداد, کرمی, وحید,

Background: Anode heel effect refers to reduction of radiation intensity in the anode side of X-ray tube. This variation in radiation intensity across the anode-cathode of X-ray tube can be benefited for decrease radiation exposure in some radiological examinations. The aim of this study was to evaluate the effect of anode heel orientation on the radiation dose received by the testes in male pa...

Journal: :iranian journal of cancer prevention 0
mohammad houshyari department of radiation oncology, shohada hospital, shahid beheshti university of medical sciences, tehran, iran anya jafari department of radiation oncology, shohada hospital, shahid beheshti university of medical sciences, tehran, iran ahmad mostaar department of medical physics, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran

physical agents such as ultraviolet or ionizing radiation and repetitive trauma have been related to the causation of cancer in humans. much less clear is the association between exposure to radiofrequency, such as radar and microwave radiation to the development of cancer. sporadic case reports and small series suggest that this type of radiation might lead to cancer or contribute to its evolu...

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