Evaluation of a technique for separating organic material from mineral bone in individuals occupationally exposed to Pu.

abstract：:A low-background phoswich detector is used to detect small amounts of 147Pm--a pure beta-emitting nuclide--present in the liver of an occupational worker. The assessment was based on the measurement of bremsstrahlung radiation produced by the beta particles in the tissue. Computer programs based on Monte Carlo techniq...

journal_title：Health physics

authors： Bhati S

更新日期：1993-06-01 00:00:00

abstract：:Self-luminous signs are generally licensed consumer products used to identifying exits, handicap accessibility areas, parking lots, no smoking areas, life boat locations, and emergency stair locations. While purchasers of these signs are exempt from the requirement of applying for a specific license, they are not exem...

journal_title：Health physics

authors： Linsley ME

更新日期：2005-02-01 00:00:00

abstract：:An empirical expression of cavity theory for electron fields is developed in a fashion similar to Burlin's general theory of cavity ionization for photons. It incorporates a term that relates the absorbed dose ratio in the cavity and material medium to the differences in electron scattering. This new expression correl...

journal_title：Health physics

authors： Ogunleye OT,Paliwal BR

更新日期：1985-11-01 00:00:00

abstract：:An evaluation of available personnel monitoring data and radium body burden records of dial painters handling an annual average of 1.5 Ci of radium indicates that they received an average of about 2 rem/person whole body exposure, 3 rem to the lungs from radon inhalation and 0.2 rad to the bone from radium body burden...

journal_title：Health physics

authors： Simpson RE,Shuman FG,Moghissi AA,Blackburn JA,Bailey ED

更新日期：1983-05-01 00:00:00

abstract：:The standard mathematical treatment of the buildup and decay of airborne radionuclides on a filter paper uses the solutions of the so-called Bateman equations adapted to the sampling process. These equations can be interpreted as differential equations for the expectation of an underlying stochastic process, which des...

journal_title：Health physics

authors： Groer PG,Lo Y

更新日期：1996-12-01 00:00:00

abstract：:The aim of this paper is to evaluate the risks and doses for the internal contamination of the radiochemistry staff in a high workload medical cyclotron facility. The doses from internal contamination derive from the inhalation of radioactive gas leakage from the cells by personnel involved in the synthesis processes ...

journal_title：Health physics

authors： Calandrino R,del Vecchio A,Savi A,Todde S,Belloli S

更新日期：2009-10-01 00:00:00

abstract：:Monte Carlo neutron transport calculations were performed to obtain the neutron response functions of a superheated drop detector (SDD-100) that is surrounded by polyethylene of various thicknesses. The calculational results suggest that a SDD-100 surrounded by 2.54 cm of polyethylene gives the best dose-equivalent re...

journal_title：Health physics

authors： Wang CK

更新日期：1992-03-01 00:00:00

abstract：:Prompt gamma emission data from the International Atomic Energy Agency's Prompt Gamma-ray Neutron Activation Analysis database are analyzed to determine the absorbed dose rates in tissue to be expected when natural elements are exposed in a near-thermal neutron environment. ...

journal_title：Health physics

authors： Schwahn SO

更新日期：2015-10-01 00:00:00

abstract：:While it is implicitly recognized that the benefits of diagnostic imaging far outweigh any theoretical radiogenic risks, quantitative estimates of the benefits are rarely, if ever, juxtaposed with quantitative estimates of risk. This alone - expression of benefit in purely qualitative terms versus expression of risk i...

journal_title：Health physics

authors： Zanzonico PB

更新日期：2016-03-01 00:00:00

abstract：:Thermoluminescent detectors (TLDs) can provide accurate and precise measurements for both patient and personnel dosimetry in the medical imaging environment. They have the advantages of tissue equivalency, an excellent dynamic range, and dose rate independence. In the work reported here, experiments with planar x-ray,...

journal_title：Health physics

authors： Kearfott KJ,Nabelssi BK,Rucker RH,Klingler GW

更新日期：1990-12-01 00:00:00

abstract：:Thyroids from mule deer (Odocoileus hemionus) were collected in New Mexico, Colorado, Wyoming and Idaho and 129I/127I atom ratios were determined. Iodine-129/127 atom ratios were significantly (P less than 0.005) different among states. Ratios in Wyoming and Idaho control thyroids were significantly (P less than 0.05)...

journal_title：Health physics

authors： Markham OD,Hakonson TE,Whicker FW,Morton JS

更新日期：1983-07-01 00:00:00

abstract：:The frequency of hypoxanthine-guanine phosphoribosyltransferase (hprt) mutations has been determined in the peripheral T-lymphocytes of 18 workers at the Sellafield nuclear reprocessing installation with cumulative recorded radiation doses of about 500 mSv or more in comparison with a matched control group of 18 worke...

journal_title：Health physics

authors： Cole J,Arlett CF,Green MH,Holdsworth D,Tawn EJ,Bridges BA

更新日期：1995-03-01 00:00:00

abstract：:Traditionally, medical radiation emergency plans have provided for the receipt and care of a limited number of individuals, usually no more than two or three at any given time. Large numbers of contaminated, uninjured individuals cannot be effectively handled in the emergency departments (EDs) of hospitals as they pre...

journal_title：Health physics

authors： Miller K,Groff L,Erdman M,King S

更新日期：2005-08-01 00:00:00

abstract：:Accidental exposure to depleted or enriched uranium may occur in a variety of circumstances. There is a need to quantify such exposure, with the possibility that the testing may post-date exposure by months or years. Therefore, it is important to develop a very sensitive test to measure precisely the isotopic composit...

journal_title：Health physics

authors： Parrish RR,Thirlwall MF,Pickford C,Horstwood M,Gerdes A,Anderson J,Coggon D

更新日期：2006-02-01 00:00:00

abstract：:Nine elementary schools in Maine were examined to track the release of 222Rn and to determine the transfer coefficient from water into air. Water-use simulations were performed by running sinks and sprayers for 1 h in a kitchen. The 222Rn in air was measured over 24 h throughout the school. The subsequent release of 2...

journal_title：Health physics

authors： Guiseppe VE,Gould TJ,Hess CT

更新日期：2007-04-01 00:00:00

abstract：:The radioactivity of coals and ashes from Spanish coal power plants (CPP) was evaluated. This radioactivity is due mainly to 40K and the U and Th series. The samples were measured in secular equilibrium using a NaI(T1) detector. The annual average airborne releases were also evaluated. An atmospheric dispersion model ...

journal_title：Health physics

authors： Alvarez MC,Garzon L

更新日期：1989-11-01 00:00:00

abstract：:Data were obtained from the literature for gonad and body weights and for the Pu or Ce content of the gonads and body at death for several laboratory animal species, five human Pu injection cases, and 731 human adults exposed environmentally to Pu in fallout. Data for Pu concentration in gonads, liver, and bone sample...

journal_title：Health physics

authors： Thomas RG,Durbin PW,McInroy JF,Healy JW

更新日期：1989-01-01 00:00:00

abstract：:A population-based case-control study of thyroid cancer was carried out in contaminated regions of Belarus and Russia among persons who were exposed during childhood and adolescence to fallout from the Chernobyl accident. For each study subject, individual thyroid doses were reconstructed for the following pathways of...

journal_title：Health physics

authors： Drozdovitch V,Khrouch V,Maceika E,Zvonova I,Vlasov O,Bratilova A,Gavrilin Y,Goulko G,Hoshi M,Kesminiene A,Shinkarev S,Tenet V,Cardis E,Bouville A

更新日期：2010-07-01 00:00:00

abstract：:The use of nuclear gauges for process control and elemental analysis in the mining industry in Ghana, West Africa, is wide spread and on the increase in recent times. The Ghana Radiation Protection Board regulates nuclear gauges through a system of notification and authorization by registration or licensing, inspectio...

journal_title：Health physics

authors： Faanu A,Darko EO,Awudu AR,Schandorf C,Emi-Reynolds G,Yeboah J,Glover ET,Kattah VK

更新日期：2010-05-01 00:00:00

abstract：:The destruction of the Unit 4 reactor at the Chernobyl Nuclear Power Plant resulted in the generation of radioactive contamination and radioactive waste at the site and in the surrounding area (referred to as the Exclusion Zone). In the course of remediation activities, large volumes of radioactive waste were generate...

journal_title：Health physics

authors： Napier BA,Schmieman EA,Voitsekovitch O

更新日期：2007-11-01 00:00:00

abstract：:The objective of the present study was to assess the lung cancer risk induced by exposures to radon progeny of people living in some areas of Transylvania, Romania. Indoor radon concentrations were measured in 667 dwellings of Stei area, Cluj, Bistrita-Nasaud, Sibiu, and Alba counties. Measurements were performed usin...

journal_title：Health physics

authors： Truta-Popa LA,Dinu A,Dicu T,Szacsvai K,Cosma C,Hofmann W

更新日期：2010-09-01 00:00:00

abstract：:Beagle dogs were given subcutaneous implants of plutonium in their forepaws to mimic hand wounds received by workers accidentally contaminated with plutonium. Ten dogs received 9.46 +/- 0.43 mu Ci of plutonium oxide, and eight dogs received 1.25 +/- 0.60 mu Ci of plutonium nitrate. Surviving dogs were sacrificed at 8 ...

journal_title：Health physics

authors： Dagle GE,Bristline RW,Lebel JL,Watters RL

更新日期：1984-07-01 00:00:00

abstract：:Several radiation dose- and time-dependent tissue sequelae develop following acute high-dose radiation exposure. One of the recognized delayed effects of such exposures is lung injury, characterized by respiratory failure as a result of pneumonitis that may subsequently develop into lung fibrosis. Since this pulmonary...

journal_title：Health physics

authors： Garofalo M,Bennett A,Farese AM,Harper J,Ward A,Taylor-Howell C,Cui W,Gibbs A,Lasio G,Jackson W 3rd,MacVittie TJ

更新日期：2014-01-01 00:00:00

abstract：:Operators of industrial high-frequency dielectric heaters are exposed to electromagnetic fields that are high enough to significantly increase body temperature. The assessment of exposure based on the measurement of external field strengths is, however, inaccurate due to the non-uniformity of the fields. This paper pr...

journal_title：Health physics

authors： Kännälä S,Puranen L,Sihvonen AP,Jokela K

更新日期：2008-02-01 00:00:00

abstract：:Data on nuclear medicine thyroid examinations performed in Manitoba (population 1 million) from 1981-1985 were collected, with more detailed demographic data obtained on 1,100 consecutive patients between June 1987 and January 1988. An average of 2,081 patients were examined per year, 81% female and 19% male, represen...

journal_title：Health physics

authors： Huda W,Gordon K,Greenberg ID

更新日期：1990-09-01 00:00:00

abstract：:The method presented provides an alternative to the shadow shield method for experimentally measuring the contribution due to scattering radiation in a calibration range. Scattering of 0.6616 MeV photons from a Cs irradiator in a calibration range does not only occur due to the walls and floor of the range. It also oc...

journal_title：Health physics

authors： Rowan MS,Blue TE,Lahti E,Talnagi J,Herminghuysen K,Petrie CM

更新日期：2013-09-01 00:00:00

abstract：:The Medical University of South Carolina is currently participating in clinical trials of 131I radiolabeled Anti-B1 antibody for treatment of Non-Hodgkin's lymphoma. Under current South Carolina Department of Health and Environmental Control regulatory guidelines,; these patients are required to be admitted to the hos...

journal_title：Health physics

authors： Ryan MT,Spicer KM,Frei-Lahr D,Samei E,Frey GD,Hargrove H,Bloodworth G

更新日期：2000-11-01 00:00:00

abstract：:Linear accelerator workloads for each available photon energy are important quantities to know for radiation safety considerations, and presented is a technique to measure the workload using paired detectors. The signals from the two detectors can give sufficient information to separate the signal contributions from 6...

journal_title：Health physics

authors： Corns R,Schroeder C,Sandhu G,Henderson K,McKay I

更新日期：2019-09-01 00:00:00

abstract：:A simultaneous detection of gross alpha and beta radioactivity was studied using gas proportional counting. This measurement is a part of a method mandated by US Environmental Protection Agency to screen for alpha and beta radioactivity in drinking water. Responses of a gas proportional detector to alpha and beta part...

journal_title：Health physics

authors： Semkow TM,Parekh PP

更新日期：2001-11-01 00:00:00

abstract：:The Mayak Production Association (MPA) was the first plutonium production plant in the former Soviet Union. Workers at the MPA were exposed to relatively large internal radiation intakes and external radiation exposures, particularly in the early years of plant operations. This paper describes the updated dosimetry da...

journal_title：Health physics

authors： Vasilenko EK,Khokhryakov VF,Miller SC,Fix JJ,Eckerman K,Choe DO,Gorelov M,Khokhryakov VV,Knyasev V,Krahenbuhl MP,Scherpelz RI,Smetanin M,Suslova K,Vostrotin V

更新日期：2007-09-01 00:00:00