نتایج جستجو برای: Radiation Measurement

تعداد نتایج: 667117  

J.K. Cho, K. Choi,

Background: The publicchr('39')s understanding of radiation and protection of radiation harm is not high. Therefore, it is meaningful to know the radiation safety literacy level in terms of health care. This study developed a measurement tool that can help to identify the actual condition of radiation safety literacy and conducted the statistical assessment of the developed tool. Materials and ...

Journal: :iranian journal of radiation research 0
t. cakir department of radiation oncology, medical faculty, yuzuncu yil university 65080, van, turkey a. gur department of physicalchemistry, science and art faculty, yuzuncu yil university, 65080, van, turkey a. arasoglu department of nuclear physics, science and art faculty, yuzuncu yil university, 65080, van, turkey

background: advances in radiation dosimetry concepts and the development of primary measurement standards based on absorbed dose to water over the last decades offer the possibility to calibrate ionisation chambers directly in terms of absorbed dose to water. the aim of this study is the investigation on utility of artificial body fluid (abf) instead of water by comparing dosimetric measurement...

Journal: :iranian journal of medical physics 0
mojtaba ghorbanipour department of environmental engineering, ahvaz branch, islamic azad university, ahvaz, iran azamalsadat hosseini alhashemi department of environmental sciences, ahvaz branch, islamic azad university, ahvaz, iran somayeh gharloghi department of medical physics, lorestan university of medical sciences, khorramabad, iran mahin adeli department of public health, lorestan university of medical sciences, khorramabad, iran mehrdad gholami department of medical physics, lorestan university of medical sciences, khorramabad, iran

introduction radioactive materials naturally exist in the world. indeed, approximately 82% of human-absorbed radiation doses, which are out of human control, arise from natural sources of radiation including cosmic, terrestrial, and exposure through inhalation or ingestion. thus, the aim of the present study was to estimate health risk, as well as the effective and organ doses from naturally oc...

Journal: :iranian journal of radiation research 0
k. ghazikhanlou sani department of radiology technology, faculty of para-medicine, hamadan university of medical sciences, hamadan, iran m. jafari department of radiology, faculty of medicine, hamadan university of medical sciences, hamadan, iran m. mohammadi department of medical physics, faculty of medicine, hamadan university of medical sciences, hamadan, iran m. mojiri department of radiology technology, faculty of para-medicine, hamadan university of medical sciences, hamadan, iran a. rahimi department of radiology, besat hospital, hamadan university of medical sciences, hamadan, iran

background: although ionizing radiation is widely used to diagnose many diseases, the relevant hazards are known to be as an important limitation of its application. it is believed that the awareness of ionizing radiation dose values is one of the main stages in patient's radiation protection. the purpose of this study has been to investigate the level of physicians' knowledge about r...

Journal: :iranian journal of radiation research 0
m.b. tavakoli department of medical physics and medical engineering, school of medicine, isfahan university of medical sciences, isfahan, iran z. shahi department of medical physics and medical engineering, school of medicine, isfahan university of medical sciences, isfahan, iran

introduction: ultraviolet (uv) radiation affects human organs such as skin, eyes and immune system, as well as animals and plants. the main natural source of uv radiation is the sun. to study the effects of solar uv radiation there is a need to quantify variations of solar energy received on the earth surface at different intervals. materials and methods: to measure uv radiation a broadband fib...

Journal: :iranian journal of radiation research 0
i. setilo medical physics department, faculty of health sciences, university of the free state, bloemfontein 9300, south africa f.c.p. du plessis medical physics department, faculty of health sciences, university of the free state, bloemfontein 9300, south africa

background:  radiochromic film is used for radiation dose measurement, xr-rv3 is used in fluoroscopy and ebt2 film in radiation therapy. the aim was to determine if the dosimetric properties of these two films are comparable in megavolt photon beams. materials and methods: comparison measurements included: calibration curves, heterogeneous phantom dose profiles, and nasopharynx dose distributio...

Journal: :journal of biomedical physics and engineering 0
s j hosseinialiabadi s m hosseini pooya h afarideh f mianji

normal 0 false false false en-us x-none fa background: the angular dependency of response for tld cards may cause deviation  from its true value on the results of environmental dosimetry, since tlds may  be exposed to radiation at different angles of incidence from the surrounding area. objective: a 3d setting of tld cards has been calibrated isotropically in a standard  radiation field to eval...

M.B. Tavakoli, Z. Shahi,

Introduction: Ultraviolet (UV) radiation affects human organs such as skin, eyes and immune system, as well as animals and plants. The main natural source of UV radiation is the Sun. To study the effects of solar UV radiation there is a need to quantify variations of solar energy received on the earth surface at different intervals. Materials and Methods: To measure UV radiation a broadband fib...

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