نتایج جستجو برای: radiation exposure

تعداد نتایج: 525895  

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: :international journal of pediatrics 0
vahid karami medical physics student (msc), department of medical physics, student research committee, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran. mansour zabihzadeh assistant professor, department of medical physics, school of medicine, student research committee, ahvaz jundishapur university of medical sciences, ahvaz, iran. mehrdad gholami assistant professor, department of medical physics, lorestan university of medical sciences, khorram abad, iran. nasim shams assistant professor (phd), department of oral and maxillofacial radiology, school of dentistry, ahvaz jundishapur university of medical sciences, ahvaz, iran zahra fazeli nezhad radiologist, department of radiology, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran.

background  it is remain a main concern that pediatric chest radiographies contribute to the significant radiation exposure to the thyroid gland as a more susceptible organ to radiation induced cancer. the aim of this study was to evaluate the entrance surface dose (esd) of pediatric chest radiography compared to the diagnostic reference levels (drl) and evaluation the efficacy of the lead (pb)...

Journal: :iranian journal of radiology 0
myeong seong kim department of radiology, the korean national cancer center, goyang, republic of korea; graduate school of public health and institute of health and environment, seoul national university, seoul, republic of korea jong-woong lee department of radiology, kyung hee university hospital at gang-dong, seoul, republic of korea sun geun kim department of radiological technology, baekseok culture university, cheonan, republic of korea dae cheol kweon department of radiological science, shinhan university, uijeongbu, republic of korea; department of radiologic science, shinhan university, uijeongbu-shi, republic of korea. tel: +82-318703416, fax: +82-318703419

conclusion scout views may be useful in determining dose and image quality in ct scanning; however, it is necessary to first determine the most appropriate scout view for ct scans. background while using the automatic exposure control technique in computed tomography (ct), the scout view determines the radiation dose for the ct scan by taking anatomical morphology into consideration. objectives...

Journal: :iranian journal of radiation research 0
gh. haeri ent of medical physics, faculty of medical sciences, tarbiat modares university, tehran, iran h. rajabi department of medical physics, faculty of medical sciences, tarbiat modares university, tehran, iran sh. akhlaghpoor department of radiology, sina hospital, tehran university of medical science, tehran, iran

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...

Journal: :international journal of occupational hygiene 0
faramarz majidi department of occupational health, zanjan university of medical sciences, zanjan, iran. kamaledin abedi department of occupational health, faculty of health and paramedical sciences, zanjan university of medical sciences, zanjan, iran seyed reza azimi pirsaraei department of occupational health, zanjan university of medical sciences, zanjan, iran

the harmful effects of the long-term ocular exposure to cumulative levels of infrared radiation (ir) in glassblowing and foundries have been recognized since the late 19th century. these effects include cataracts, keratitis, and chronic dry eye problems. therefore, infrared radiation measurements are critical and need to be assessed regularly in the industries and workplaces where there are hig...

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: :iranian journal of radiation research 0
r.k. singh department of orthopaedics, jawahar lal nehru medical college, dmims, wardha, maharashtra, india

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...

Journal: :journal of occupational health and epidemiology 0
j vatani hamedan h ghasemzadeh shahroud m raei tehran

background : farmers and welders who work in open spaces and are exposed to direct sunlight are often exposed to sunlight radiation o n the neck and head . thus, they may be afflicted with various types of skin cancer . the aim of the present study was to investigate the amount of uv exposure in welders working in shahrud city , iran .   materials and method s : this cross-sectional , descripti...

Introduction: Little information is available concerning the radiation exposure of anesthesiologists, and no such data have previously been collected in Iran. This prospective study was performed to determine the amount of radiation exposure of anesthesiologists for the purpose of assessing whether or not dangerous levels of radiation exposures were being reached, and to identify factors that c...

Journal: :archives of cardiovascular imaging 0
benjamin s goins brooke army medical center, cardiology section, texas, usa aaron henderson hematology and oncology department, brooke army medical center, san antonio, texas, usa charles k lin brooke army medical center, cardiology section, texas, usa anthony charmforoush department of medicine, brooke army medical center, san antonio, texas, usa takor b arrey-mbi department of medicine, brooke army medical center, san antonio, texas, usa ryan l prentice brooke army medical center, cardiology section, texas, usa

patients and methods we evaluated radiation exposure from initial and downstream testing in a prospectively collected, matched cohort evaluated for cp in the emergency department (ed) with either ccta compared with usual care over a median follow-up of 19.6 months. effective radiation dose was calculated using published conversion factors. results prospective, ecg-triggered acquisition using a ...

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