نتایج جستجو برای: maximum skin dose

تعداد نتایج: 769272  

Journal: :iranian journal of medical physics 0
mohammad taghi bahreyni toossi medical physics research center, medical physics department, mashhad university of medical sciences, mashhad, iran.

introduction the increasing practice of interventional fluoroscopy in diagnosis and treatment of cardiovascular disease has risen attention to improve radiation protection of patients and cardiologists in these relatively high dose techniques. therefore, nowadays there is an emphasis on the measurement of radiation dose received by patients and cardiologists arising from the relevant procedures...

H. Emami, M. Hashemi, M.B. Tavakoli, S. Monsef,

Background: Practice of interventional cardiology procedures such as Coronary angiography (CA) and percutaneous transluminal coronary angioplasty (PTCA) has largely increased in recent years and is now changing to a matter of routine in many hospitals. The purpose of this study was to measure skin and organ doses in patients undergoing CA and PTCA and to find a probable relation with c...

Journal: :iranian journal of medical physics 0
nsikan u. esen - department of physics, akwa ibom state university, pmb 1167 uyo, nigeria

introduction radiation exposures from diagnostic medical examinations are generally low and are almost always justified by the benefits of accurate diagnosis of possible disease conditions. therefore, entrance skin dose (esd), body organ dose (bod), and effective dose (ed) from adult patients undergoing routine thorax posterior-anterior (pa) and thorax right lateral (rlat) were estimated in uni...

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 s. monsef department of medical physics and medical engineering, school of medicine, isfahan university of medical sciences, isfahan, iran m. hashemi department of internal medicine, school of medicine, isfahan university of medical sciences, isfahan, iran h. emami department of radiation oncology, school of medicine, isfahan university of medical sciences, isfahan, iran

background: practice of interventional cardiology procedures such as coronary angiography (ca) and percutaneous transluminal coronary angioplasty (ptca) has largely increased in recent years and is now changing to a matter of routine in many hospitals. the purpose of this study was to measure skin and organ doses in patients undergoing ca and ptca and to find a probable relation with cardiologi...

Journal: :iranian journal of medical physics 0
m. t. bahreyni toosi professor, medical physics research center, bu-ali research institute, mashhad university of medical sciences, mashhad, iran. h. saberi ph.d. student in medical physics, mashhad university of medical sciences, mashhad, iran m. momen nezhad ph.d. student in medical physics, mashhad university of medical sciences, mashhad, iran

introduction:  skin  sparing  is  one  of  the  most  desirable  characteristics  of  high  energy  photon  beams. however, the photons emerging from the target of linacs are contaminated by secondary  electrons  as  a  result  of  their  interactions  with  air,  collimators,  flattening  filter  and  any  other  objects in their path. this phenomenon tends to increase the skin dose received b...

Journal: :Japanese Journal of Radiological Technology 2015

Arash Gholoobi Hosein Nademi Mohammad Taghi Bahreyni Toossi, Seyedeh Farideh Baradaran

Introduction The increasing practice of interventional fluoroscopy in diagnosis and treatment of cardiovascular disease has risen attention to improve radiation protection of patients and cardiologists in these relatively high dose techniques. Therefore, nowadays there is an emphasis on the measurement of radiation dose received by patients and cardiologists arising from the relevant procedures...

Journal: :journal of biomedical physics and engineering 0
hr baghani phd student of radiation medicine, radiation medicine department, shahid beheshti university, tehran, iran ar nazempour msc student of radiation medicine, radiation medicine department, shahid beheshti university, tehran, iran smr aghamiri professor of radiation medicine, radiation medicine department, shahid beheshti university, tehran, iran sm hosseini daghigh phd student of radiation medicine, radiation medicine department, shahid beheshti university, tehran, iran aa mowlavi professor of nuclear physics, physics department, school of science, hakim sabzevari university, sabzevar, iran

background and objective: the most common intravascular brachytherapy sources include 32p, 188re, 106rh and 90sr/90y. in this research, skin absorbed dose for different covering materials in dealing with these sources were evaluated and the best covering material for skin protection and reduction of absorbed dose by radiation staff was recognized and recommended. method: four materials includin...

Journal: :iranian journal of medical physics 0
seyed mostafa ghavami department of radiology, paramedical school, tabriz university of medical sciences, tabriz, iran hosein ghiasi medical radiation sciences research team, tabriz university of medical sciences tabriz, iran

introduction accurate estimation of the skin-absorbed dose in external radiation therapy is essential to estimating the probability of secondary carcinogenesis induction materials and methods electron contamination in prostate radiotherapy was investigated using the monte carlo (mc) code calculation. in addition, field size dependence of the skin dose was assessed. excess cancer risk induced by...

Background and Objective: The most common intravascular brachytherapy sources include 32P, 188Re, 106Rh and 90Sr/90Y. In this research, skin absorbed dose for different covering materials in dealing with these sources were evaluated and the best covering material for skin protection and reduction of absorbed dose by radiation staff was recognized and recommended.Method: Four materials including...

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