نتایج جستجو برای: ionizing radiation computed x
تعداد نتایج: 947884 فیلتر نتایج به سال:
OBJECTIVE Imaging methods that use ionizing radiation have been more frequent in various medical fields with advances in imaging technology. The aim of our study was to make residents be aware of the radiation dose they are subjected to when they conduct radiological imaging methods, and of cancer risk. MATERIALS AND METHODS A total of 364 residents participated in this descriptive study whic...
Ionizing radiation management is among the most important safety issues in interventional cardiology. Multiple radiation protection measures allow the minimization of x-ray exposure during interventional procedures. Our purpose was to assess the utilization and effectiveness of radiation protection and optimization techniques among interventional cardiologists in Lithuania. Interventional cardi...
radiography is one of the most valuable diagnostic tools used in comprehensive dental care. although there is no safe level of radiation exposure, the possible risk associated with exposure to radiation, must be elucidated. to date, a variety of assays have been proposed to assess the mutagenic potential of genotoxicants; however, these methods are typically laborious and time consuming. the ai...
conclusions the increasing cell toxicity, apoptosis-inducing effects and decreasing telomerase activity may play an important role in the valproic acid and radiation mechanism. the current survey suggested that it is likely beneficial to combine valproic acid and gamma radiation to treat breast cancer. results combination of valproic acid and gamma radiation increased significantly cell toxicit...
background: the aim of the study was to analyze the effective dose record of occupationally exposed radiation workers at bahawalpur institute of nuclear medicine and oncology department. materials and methods: annual effective doses of occupationally exposed workers were measured by film badge dosimetry by sending the dosimeters to radiation dosimetry laboratory (rdl), pakistan institute of nuc...
protective role of rheum tanguticum polysaccharides 1 on radiation-induced intestinal mucosal injury
the protective effects of rheum tanguticum polysaccharide 1 (rtp1), which is extracted from the chinese traditional medicine rheum tanguticum, on radiation-induced intestinal mucosal injury was investigated. rat intestinal crypt epithelial cells (iec-6 cells) and sprague-dawley rats were each divided into control, irradiated and rtp1-pretreated irradiated groups. after irradiation, cell surviva...
Background: Exposure to ionizing radiation results in genotoxicity and the unrepaired lesions in cellular DNA results in cell cycle arrest, reproductive death, interphase death, division delay, chromosome aberrations, mutations, etc. leading to the intensive destruction of cells and violation of their proliferative capacity there by adversely affecting the mammalian system. Since ionizing radia...
581 *Lieutenant Colonel, U.S. Army; Health Services Command Radiation Protection Staff Officer, Fort Sam Houston, Texas 78234-6000; formerly Chief, Health Physics Division, U.S. Army Environmental Hygiene Agency †Chief, Industrial Health Physics Branch, Health Physics Division, U.S. Army Environmental Hygiene Agency ‡Captain, U.S. Army; Chief, Medical Health Physics Branch, U.S. Army Environmen...
Introduction The combined use of cardiac computed tomography coronary angiography (CTCA) and myocardial perfusion imaging allows the non-invasive evaluation of coronary morphology and function. Cardiovascular magnetic resonance imaging (CMR) has several advantages: it can simultaneous assess myocardial perfusion, ventricular and valvular function, cardiomyopathy and aortic disease and does not ...
Exposure to ionizing radiation resulted from computed tomography (CT) examinations concerns a risk associated with potential radiation-induced cancers. Widespread use of this diagnostic method during the last decades has led significant increase collective dose world’s population. Minor restrictions for X-ray procedures involve considerable “beneficial” exposure burden among CT-examined patient...
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