نتایج جستجو برای: ionizing radiation computed x

تعداد نتایج: 947884  

2012
Senem Divrik Gökçe Erkan Gökçe Melek Coşkun

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...

Journal: :Journal of radiological protection : official journal of the Society for Radiological Protection 2016
Zivile Valuckiene Martynas Jurenas Inga Cibulskaite

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...

Journal: :journal of dentistry, tehran university of medical sciences 0
pallak arora department of oral medicine and maxillofacial radiology, kalka dental college, meerut, india. parvathi devi professor, department of oral medicine and maxillofacial radiology, rama dental college, hospital & research centre, kanpur, india. sartaj singh wazir department of oral medicine and maxillofacial radiology, mb kedia dental college, birganj, nepal.

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...

Journal: :jundishapur journal of natural pharmaceutical products 0
maryam moradi binabaj biochemistry and metabolic disorders research center, golestan university of medical sciences, gorgan, ir iran seyed ahmad hosseini nutrition and metabolic disease research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran alireza khoshbin khoshnazar biochemistry and metabolic disorders research center, golestan university of medical sciences, gorgan, ir iran jahanbakhsh asadi biochemistry and metabolic disorders research center, golestan university of medical sciences, gorgan, ir iran; biochemistry and metabolic disorders research center, golestan university of medical sciences, gorgan, ir iran. tel: +98-1732440225, fax: +98-1732421651

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...

Journal: :iranian journal of radiation research 0
m.a. gadhi bahawalpur institute of nuclear medicine and oncology (bino), pakistan atomic energy commission bahawalpur, pakistan sh. fatmi bahawalpur institute of nuclear medicine and oncology (bino), pakistan atomic energy commission bahawalpur, pakistan m.sh. gadhi institute of geology, university of the punjab, lahore, pakistan u. mahmood bahawalpur institute of nuclear medicine and oncology (bino), pakistan atomic energy commission bahawalpur, pakistan m. shakil department of physics, university of gujrat, pakistan s.a. buzdar medical physics research group, department of physics, the islamia university of bahawalpur, pakistan

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...

Journal: :iranian journal of pharmaceutical research 0
zhi-pei zhang laboratory of department of thoracic surgery, tangdu hospital, fourth military medical universit lin-na liu pharmacy department, tangdu hospital, fourth military medical university lei shi pharmacy department, tangdu hospital, fourth military medical university shi-cao li pharmacy department, tangdu hospital, fourth military medical university wen-juan zhang pharmacy department, tangdu hospital, fourth military medical university yan zhang pharmacy department, tangdu hospital, fourth military medical university

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...

A. Menon, C.K.K. Nair,

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...

2006
MICHAEL W. MUELLER

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...

2011
Jan GJ Groothuis Aernout M Beek Stijn L Brinckman Martijn R Meijerink Mijntje LP van den Oever Mark BM Hofman Cornelis van Kuijk Albert C van Rossum

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 ...

Journal: : 2023

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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