نتایج جستجو برای: radiation monitoring

تعداد نتایج: 531766  

Journal: :Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions 2011
Charles E Chambers Kenneth A Fetterly Ralf Holzer Pei-Jan Paul Lin James C Blankenship Stephen Balter Warren K Laskey

The Society of Cardiovascular Angiography and Interventions present a practical approach to assist cardiac catheterization laboratories in establishing a radiation safety program. The importance of this program is emphasized by the appropriate concerns for the increasing use of ionizing radiation in medical imaging, and its potential adverse effects. An overview of the assessment of radiation d...

Journal: :International journal of radiation oncology, biology, physics 2006
Nicholas Dainiak Domenico Delli Carpini Michael Bohan Michael Werdmann Edward Wilds Agnus Barlow Charles Beck David Cheng Nancy Daly Peter Glazer Peter Mas Ravinder Nath Gregory Piontek Kenneth Price Joseph Albanese Kenneth Roberts Andrew L Salner Sara Rockwell

Although general guidelines have been developed for triage of victims in the field and for hospitals to plan for a radiologic event, specific information for clinicians and administrators is not available for guidance in efficient management of radiation victims during their early encounter in the hospital. A consensus document was developed by staff members of four Connecticut hospitals, two i...

2007
M. Bruinsma P. Burchat S. Majewski

The BaBar experiment at the Stanford Linear Accelerator Center has been using two polycrystalline chemical vapor deposition (pCVD) diamonds and 12 silicon PIN diodes for radiation monitoring and protection of the Silicon Vertex Tracker (SVT). We have used the pCVD diamonds for more than 3 years, and the PIN diodes for 7 years. We will describe the SVT and SVT radiation monitoring system as well...

2000
T. I. Meyer P. R. Burchat Chih-hsiang Cheng David Kirkby Chris Roat

We discuss the design, implementation and performance of the radiation monitoring and protection system used by the Silicon Vertex Tracker (SVT) in the BaBar detector. Using 12 reverse-biased PIN photodiodes mounted around the beampipe near the IP, we are able to provide instantaneous radiation dose rates, absorbed dose integrals, and active protection that aborts the circulating beams in the P...

Journal: :Health physics 1999
J C Liu P Bong B Gray X S Mao G Nelson W R Nelson D Schultz J Seeman

The radiation safety system of the B-Factory accelerator facility at the Stanford Linear Accelerator Center is described. The radiation safety system, which is designed to protect people from prompt radiation exposure due to beam operation, consists of the access control system and the radiation containment system. The access control system prevents people from being exposed to the very high ra...

Journal: :Health physics 2009
David J Brenner

There is strong evidence that ionizing radiation increases cancer risks at high doses (e.g., >or=1 Gy), and persuasive, if controversial, epidemiological evidence that cancer risks are increased at low doses ( approximately 10 mGy). Discussed here are the issues related to extrapolating radiation risks from low radiation doses to very low doses (<or=1 mGy) - for which purpose we are forced to r...

1998
K. T. Hsu C. H. Kuo Jenny Chen C. S. Chen K. K. Lin C. C. Kuo Richard Sah

There are several new developments in diagnostics at the SRRC. These new developments include an orbit feedback system, tune monitor, filling pattern monitor, timedomain coupled-bunch oscillation monitor, and an improved synchrotron radiation monitor. A global orbit feedback system as well as a local orbit feedback system have been developed to eliminate excursions from the reference orbit that...

2009
S. O’Keeffe E. Lewis

Poly Methyl MethAcrylate (PMMA) based plastic optical fibres offer a low cost radiation monitoring solution with a wide dose range, capable of providing real-time, online information. The sensitivity of the fibre to ionising radiation is shown to be dependant on wavelength, with the sensitivity increasing with decreasing wavelength, and so by carefully selecting the monitoring wavelength, the d...

J. Salimi, K. Moosavi, S. Vatankhah,

Background: Measurement of background radiation is very important from different points of view especially for human health. The aim of this survey was focused on determining the current background radiation in one of the highest altitude regions ( Zagros Mountains ), Chaharmahal and Bakhtiari province, in the south west of Iran . Materials and Methods: The outdoors-environmental monitoring exp...

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