نتایج جستجو برای: operator shield

تعداد نتایج: 102199  

Journal: :journal of biomedical physics and engineering 0
y. rezaei moghaddam msc, physics department of nuclear physics, faculty of science, ferdowsi university of mashhad, mashhad, iran h. miri hakimabadi professor of nuclear physics, faculty of science, ferdowsi university of mashhad, mashhad, iran l. raf’at motavalli assistant professor of nuclear physics, faculty of science, ferdowsi university of mashhad, mashhad, iran

background: changes in body composition may be used for monitoring progression/ regression of a disease. prompt γ-rays in vivo neutron activation analysis (ivnaa) has been widely used for the measurement of body composition in recent years. objective: in this paper, we tried to improve the safety of ivnaa operator. methods: the most important factor for reducing the operator receiving dose is t...

H. Miri Hakimabadi L. Raf’at Motavalli Y. Rezaei Moghaddam,

Background: Changes in body composition may be used for monitoring progression/ regression of a disease. Prompt γ-rays in vivo neutron activation analysis (IVNAA) has been widely used for the measurement of body composition in recent years.Objective: In this paper, we tried to improve the safety of IVNAA operator.Methods: The most important factor for reducing the operator receiving dose is th...

Journal: :Circulation. Cardiovascular interventions 2015
Ashraf Alazzoni Chris L Gordon Jaffer Syed Madhu K Natarajan Michael Rokoss Jon-David Schwalm Shamir R Mehta Tej Sheth Nicholas Valettas James Velianou Shaheen Pandie Darar Al Khdair Michael Tsang Brandi Meeks Kiersten Colbran Ed Waller Shun Fu Lee Tamara Marsden Sanjit S Jolly

BACKGROUND Interventional cardiologists receive one of the highest levels of annual occupational radiation exposure. Further measures to protect healthcare workers are needed. METHODS AND RESULTS We evaluated the efficacy of a pelvic lead shield and a novel surgical cap in reducing operators' radiation exposure. Patients undergoing coronary angiography or percutaneous coronary intervention (n...

Journal: :Circulation. Cardiovascular interventions 2017
Wieneke Vlastra Ronak Delewi Krischan D Sjauw Marcel A Beijk Bimmer E Claessen Geert J Streekstra Robbert J Bekker Juliette C van Hattum Joanna J Wykrzykowska Marije M Vis Karel T Koch Robbert J de Winter Jan J Piek José P S Henriques

BACKGROUND Interventional cardiologists are increasingly exposed to radiation-induced diseases like cataract and the stochastic risk of left-sided brain tumors. The RADPAD is a sterile, disposable, lead-free shield placed on the patient with the aim to minimize operator-received scatter radiation. The objective of the trial was to examine the RADPAD's efficacy in a real-world situation. METHO...

Journal: :RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin 2015
H Eder M C Seidenbusch M Treitl P Gilligan

PURPOSE Today's standard radiation protection during coronary angiography and percutaneous coronary interventions is the combined use of lead acrylic shields and table-mounted lower body protection. Ambient dose measurements, however, have shown that these protection devices need improvement. MATERIALS AND METHODS Using an anthropomorphic physical phantom, various scenarios were investigated ...

Ali Tarighatnia Mohammad Yousefi Sooteh Parinaz Mehnati, Reza Malekzadeh Yagub Khalegi Fard

Introduction: Coronary angiography (CA) is an interventional diagnostic procedure to assess cardiovascular disease. CA is performed using dedicated fluoroscopic systems equipped with either flat detector or image intensifier. There is an increase in the number of CA annually. Reducing the radiation exposure in the CA is essential, especially due to high fluoroscopy time. In ord...

Journal: :Journal of clinical pathology 1993
A F Vicca R E Stansfield R G Masterton

AIMS To evaluate a new streptococcal latex grouping kit (Shield Diagnostics Ltd) and compare it against an established latex agglutination method (Streptex; Wellcome Diagnostics). METHODS Two hundred and forty seven strains of streptococci and enterococci were tested with each kit by one operator and according to the manufacturer's instructions. Strains failing to group or giving discordant r...

Journal: :Nucleic acids research 1992
P Romby C Brunel J Caillet M Springer M Grunberg-Manago E Westhof C Ehresmann B Ehresmann

We previously showed that: (i) E.coli threonyl-tRNA synthetase (ThrRS) binds to the leader of its mRNA and represses translation by preventing ribosome binding to its loading site; (ii) the translational operator shares sequence and structure similarities with tRNA(Thr); (iii) it is possible to switch the specificity of the translational control from ThrRS to methionyl-tRNA synthetase (MetRS) b...

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