Download or read book Structural Shielding Design for Medical X ray Imaging Facilities written by National Council on Radiation Protection and Measurements and published by NCRP. This book was released on 2004 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report No. 147 (2004) presents recommendations and technical information related to the design and installation of structural shielding for facilities that use x rays for medical imaging. The purpose of structural shielding is to limit radiation exposure to employees and members of the public. The information supersedes the recommendations that address such facilities in NCRP Report No. 49, Structural Shielding Design and Evaluation for Medical Use of X Rays and Gamma Rays of Energies Up to 10 MeV, which was issued in September 1976. NCRP Report No. 147 includes a discussion of the various factors to be considered in the selection of appropriate shielding materials and in the calculation of barrier thicknesses. The Report presents the fundamentals of radiation shielding, discusses shielding design goals for controlled and uncontrolled areas in or near x-ray imaging facilities and defines the relationship of these goals to the NCRP effective dose limits for radiation workers and members of the public. The Report includes a detailed discussion of the recommended shielding design methodology for x-ray imaging facilities and provides an extensive collection of shielding data and sample shielding calculations for various types of x-ray imaging facilities. The Report is mainly intended for those individuals who specialize in radiation protection. However, it will also be of interest to architects, hospital administrators and related professionals concerned with the planning of new facilities that use x rays for medical imaging.
Download or read book Management of Exposure to Ionizing Radiation written by National Council on Radiation Protection and Measurements and published by . This book was released on 2018-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Medical Radiation Exposure of Patients in the United States written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This Report is an update 10 y after the publication of NCRP Report No. 160 (NCRP 2009) and is focused on 2016 doses to patients from medical exposures. Occupational doses and doses to caregivers are not included. Discussion of any potential risks and benefits of the use of medical exposures was beyond NCRP's scope of work. Several metrics are estimated as follows: number and type of procedures involving patient diagnostic and interventional medical radiation procedures; effective dose per procedure which is a calculated dose based upon the type of radiation and the radiation detriment (associated primarily with the induction of cancer) in tissues exposed (risk factors are based on average population characteristics and derive from linear nonthreshold assumptions); collective effective dose which is the number of procedures multiplied by the effective dose per procedure; and annual average individual effective dose which is the collective effective dose divided by the U.S. population, whether the persons were exposed or not, and allows comparison of the magnitude of medical radiation exposure to that from various nonmedical sources"--
Download or read book Maintaining Radiation Protection Records written by National Council on Radiation Protection and Measurements and published by Ncrp. This book was released on 1992 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiation Alarms and Access Control Systems written by National Council on Radiation Protection and Measurements and published by Ncrp. This book was released on 1986 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report addresses factors that influence production of an image which contains the necessary information to enable the imaging physician to report the diagnostic findings to the referring physician. The report treats such matters as the establishment of a quality control program, procedures, objectives and policies, photographic quality control, quality control in conventional radiography, fluoroscopic and cine imaging and mobile radiographic capacitor discharge and fluoroscopic systems. Also treated are x-ray tomography, mammography, dental radiography, and radiological special procedures. Computed tomography, digital imaging, nuclear medicine, ultrasound and magnetic resonance imaging are also addressed. Information is provided on quality control elements of video systems and computers."--Knovel's description
Download or read book Protection Against Neutron Radiation written by National Council on Radiation Protection and Measurements and published by . This book was released on 1971 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Implications of Recent Epidemiologic Studies for the Linear Nonthreshold Model and Radiation Protection written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Evaluation of Radiation Exposure Guidance for Military Operations written by Institute of Medicine and published by National Academies Press. This book was released on 1997-10-28 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Limitation of Exposure to Ionizing Radiation written by National Council on Radiation Protection and Measurements and published by NCRP. This book was released on 1993 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: NCRP Report No. 116 is the latest in the long series of reports on basic radiation protection criteria that began in 1934. It supersedes the predecessor in the series, NCRP Report No. 91, which was published in 1987. The current Report takes advantage of new information, evaluations and thinking that have developed since 1987, particularly the risk estimate formulations set out in NCRP Report No. 115. While the recommendations set out in this Report do not constitute a radical revision of the basic criteria, they do represent a refinement of the system enunciated in Report No. 91. Important changes include the utilization of revised tissue/organ weighting factors and the introduction of radiation weighting factors. Also noteworthy is the introduction of an allowable reference level of intake. Noteworthy too is the recommendation of an age-based lifetime limit for control of occupational exposures and a major simplification of limits aimed at controlling the exposure of the embryo and fetus. This Report, after outlining the goals and philosophy of radiation protection and the basis for exposure limits, goes on to review, in some detail, absorbed dose, equivalent dose, radiation weighting factors, and effective dose. Committed equivalent dose and committed effective dose are also introduced. Risk estimates for radiation exposure are presented and then the dose limits are enunciated. The Report also covers exposure in excess of the limits, limits for unusual occupational situations, guidance for emergency occupational exposure, and remedial action levels for naturally occurring radiation.
Download or read book Radiation Protection in Dentistry and Oral Maxillofacial Imaging written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The purpose of this Report is to enhance radiation safety in dentistry and to reinforce published, well-known dose-reduction methods that are not yet being widely applied in the day-to-day practice of dentistry. The technological advances since NCRP Report No. 145 require changing attitudes and practices of dentists because opportunities are now available for decreasing radiation doses while maintaining or improving diagnostic efficacy. This Report updates the information in NCRP Report No.145, adds new content on digital imaging, handheld x-ray devices, and CBCT, and makes recommendations for reducing patient radiation doses while maintaining or improving image quality, all in the context of the ALARA principle"--
Download or read book Ionizing Radiation Exposure of the Population of the United States written by National Council on Radiation Protection and Measurements and published by NCRP. This book was released on 1987 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NCRP Report written by National Council on Radiation Protection and Measurements and published by . This book was released on 1987 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Concepts for the Dosimetry of Internally Deposited Radionuclides written by National Council on Radiation Protection and Measurements and published by Ncrp. This book was released on 1985 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Guidelines for Exposures to Technologically Enhanced Naturally Occurring Radioactive Materials written by National Research Council and published by National Academies Press. This book was released on 1999-02-25 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Naturally occurring radionuclides are found throughout the earth's crust, and they form part of the natural background of radiation to which all humans are exposed. Many human activities-such as mining and milling of ores, extraction of petroleum products, use of groundwater for domestic purposes, and living in houses-alter the natural background of radiation either by moving naturally occurring radionuclides from inaccessible locations to locations where humans are present or by concentrating the radionuclides in the exposure environment. Such alterations of the natural environment can increase, sometimes substantially, radiation exposures of the public. Exposures of the public to naturally occurring radioactive materials (NORM) that result from human activities that alter the natural environment can be subjected to regulatory control, at least to some degree. The regulation of public exposures to such technologically enhanced naturally occurring radioactive materials (TENORM) by the US Environmental Protection Agency (EPA) and other regulatory and advisory organizations is the subject of this study by the National Research Council's Committee on the Evaluation of EPA Guidelines for Exposures to Naturally Occurring Radioactive Materials.
Download or read book Airport Passenger Screening Using Backscatter X Ray Machines written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-01-10 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Passenger screening at commercial airports in the United States has gone through significant changes since the events of September 11, 2001. In response to increased concern over terrorist attacks on aircrafts, the Transportation Security Administration (TSA) has deployed security systems of advanced imaging technology (AIT) to screen passengers at airports. To date (December 2014), TSA has deployed AITs in U.S. airports of two different technologies that use different types of radiation to detect threats: millimeter wave and X-ray backscatter AIT systems. X-ray backscatter AITs were deployed in U.S. airports in 2008 and subsequently removed from all airports by June 2013 due to privacy concerns. TSA is looking to deploy a second-generation X-ray backscatter AIT equipped with privacy software to eliminate production of an image of the person being screened in order to alleviate these concerns. This report reviews previous studies as well as current processes used by the Department of Homeland Security and equipment manufacturers to estimate radiation exposures resulting from backscatter X-ray advanced imaging technology system use in screening air travelers. Airport Passenger Screening Using Backscatter X-Ray Machines examines whether exposures comply with applicable health and safety standards for public and occupational exposures to ionizing radiation and whether system design, operating procedures, and maintenance procedures are appropriate to prevent over exposures of travelers and operators to ionizing radiation. This study aims to address concerns about exposure to radiation from X-ray backscatter AITs raised by Congress, individuals within the scientific community, and others.
Download or read book Public Radiation Exposure from Nuclear Power Generation in the United States written by National Council on Radiation Protection and Measurements and published by Ncrp. This book was released on 1987 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiation Protection Guidance for Activities in Low earth Orbit written by National Council on Radiation Protection and Measurements and published by National Council on Radiation Protection & Measurements. This book was released on 2000 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
