نتایج جستجو برای: Lead-free Shields

تعداد نتایج: 836515  

Journal: :journal of biomedical physics and engineering 0
m. r. aghamiri associate professor of medical physics, medical physics & engineering department, school of medicine, shahid beheshti university of medical sciences, tehran, iran s. m. j. mortazavi professor of medical physics, medical physics & engineering department, school of medicine, shiraz university of medical sciences, shiraz, iran m. tayebi master student of radiobiology and radiation protection, shahid beheshti university of medical sciences, tehran, iran m. a. mosleh-shirazi assistant professor of medical physics, radiotherapy department, school of medicine, shiraz university of medical sciences, shiraz, iran h. baharvand assistant professor of polymer chemistry, iran polymer institute, tehran, iran a. tavakkoli-golpayegani assistant professor of medical engineering (biomechanics), medical physics & engineering department, school of medicine, shiraz university of medical sciences, shiraz, iran

background: lead-based radiation shields are widely used in radiology departments to protect both workers and patients from any unnecessary exposure to ionizing radiation. recently there has been a great deal of concern expressed about the toxicity of lead. human lead toxicity is well documented. in that light, production of environmentally-friendly lead-free radiation shields with less weight ...

A. Tavakkoli-Golpayegani B. Zeinali-Rafsanjani H. Baharvand M. A. Mosleh-Shirazi M. R. Aghamiri, M. Tayebi S. M. J. Mortazavi

Background: Lead-based radiation shields are widely used in radiology departments to protect both workers and patients from any unnecessary exposure to ionizing radiation. Recently there has been a great deal of concern expressed about the toxicity of lead. Human lead toxicity is well documented. In that light, production of environmentally-friendly lead-free radiation shields with less weight ...

Ehsan Bakhshandeh Masoomeh Barzegar Ziyarani Mehdi Allahbakhshian-Farsani mohsen bakhshandeh, Nezhat Shakeri

Introduction: Ionizing radiation can cause damage to biologically important DNA molecules. Radiation in nuclear medicine radiation exposes people working in from two main positions; administer in gradiopharmaceuticals (the barn and squeezing a generator, procurement, distribution and drug infusion) and patients that receive radiation treatment (patients that are prescribed a ra...

Mehdi Zehtabian, Zahra Dadashi-nasab Zahra Molaeimanesh,

 Introduction: Nowadays, applications of free-lead radiation shields are increased specially for weighting factor and toxicity of lead elements. Although touching the lead may be results in the nervousand blood system of body, it is not exactly proven yet. Protective measures are the fundamental parts of radiation protection. On the other hand, high weighting factor of lead sh...

Journal: :iranian journal of medical physics 0
mehdi zehtabian ray medical engineering department, school of mechanical engineering, shiraz university, shiraz iran elham piruzan ray medical engineering department, school of mechanical engineering, shiraz university, shiraz iran zahra molaiemanesh ray medical engineering department, school of mechanical engineering, shiraz university, shiraz iran

introduction lead-based shields are the most widely used attenuators in x-ray and gamma ray fields. the heavy weight, toxicity and corrosion of lead have led researchers towards the development of non-lead shields. materials and methods the purpose of this study was to design multi-layered shields for protection against x-rays and gamma rays in diagnostic radiology and nuclear medicine. in this...

Journal: :iranian journal of medical physics 0
mehdi momennezhad nuclear medicine research center, mashhad university of medical sciences, mashhad, iran.

introduction the purpose of this study was to evaluate personal shields in radiation departments of hospitals affiliated to mashhad university of medical sciences. materials and methods first, the information related to 109 personal shields was recorded and evaluated by imaging equipment. afterwards, the equivalent lead thickness (elt) of 62 personal shields was assessed, using dosimeter and st...

Background:In diagnostic radiology lead apron, are usually used to protect patients and radiology staff against ionizing radiation. Lead apron is a desirable shield due to high absorption and effective attenuation of x-ray photons in the diagnostic radiology range.Objective: Although lead aprons have good radiation protection properties, in recent years, researchers have been looking for altern...

Hadi Didehvar Marym Salari Mehdi Momennezhad, Mohsen Salmanvandi Reza Ghasemnezhad Shahrokh Naseri

Introduction The purpose of this study was to evaluate personal shields in radiation departments of hospitals affiliated to Mashhad University of Medical Sciences. Materials and Methods First, the information related to 109 personal shields was recorded and evaluated by imaging equipment. Afterwards, the equivalent lead thickness (ELT) of 62 personal shields was assessed, using dosimeter and st...

Journal: :journal of biomedical physics and engineering 0
m kazempoor 1. msc, department of radiobiology, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran; 2. student research committee, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran; m saeedimoghadam ionizing and non-ionizing radiation protection research center, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran f shekoohi shooli n shokrpoor english department, faculty of paramedical sciences, shiraz university of medical sciences, shiraz, iran

background: in diagnostic radiology lead apron, are usually used to protect patients and radiology staff against ionizing radiation. lead apron is a desirable shield due to high absorption and effective attenuation of x-ray photons in the diagnostic radiology range. objective: although lead aprons have good radiation protection properties, in recent years, researchers have been looking for alte...

Elham Piruzan Mehdi Zehtabian, Sedigheh Sina Zahra Molaiemanesh,

Introduction Lead-based shields are the most widely used attenuators in X-ray and gamma ray fields. The heavy weight, toxicity and corrosion of lead have led researchers towards the development of non-lead shields. Materials and Methods The purpose of this study was to design multi-layered shields for protection against X-rays and gamma rays in diagnostic radiology and nuclear medicine. In this...

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