Absorbed Dose Rates in Tissue from Prompt Gamma Emissions from Near-thermal Neutron Absorption.

abstract：:The University of Cincinnati has reproduced the original formulation for the Livermore Thoracic Phantom lungs using contemporary materials and has adopted the linear attenuation coefficient as the primary quality assurance parameter for evaluating the performance capabilities of these new lung phantoms. The Livermore ...

journal_title：Health physics

authors： Spitz H,Glover S,Liu N,Smith B,Hickman D,Kruchten D,Anderson L

更新日期：1994-07-01 00:00:00

abstract：:Rare earth intensifying screen material (Gd2O2S:Tb) was added to the standard Al filtration of an oral panoramic x-ray unit, resulting in a beam capable of achieving reductions in patient dose without a loss of image quality. The added rare earth filtration technique resulted in patient dose reductions of 21-56%, depe...

journal_title：Health physics

authors： Tyndall DA,Washburn DB

更新日期：1987-01-01 00:00:00

abstract：:Discharges of radioactive materials from the nuclear fuel reprocessing plant at Sellafield in the United Kingdom give rise to 137Cs and 134Cs in fish caught in the Irish Sea. Measurements made on fish catches landed in the Irish Republic show average activities of 68 and 3 Bq/kg (wet) of 137Cs and 134Cs, respectively....

journal_title：Health physics

authors： McAulay IR,Doyle C

更新日期：1985-03-01 00:00:00

abstract：:The U.S. Department of Energy is committed to protecting the public and environment against undue risk from radiation associated with radiological activities conducted under its control. Some U.S. Department of Energy Site activities result in emissions of radioactive materials to the air. CAP88 codes are used to mode...

journal_title：Health physics

authors： Snyder S,Vázquez G,Hay T

更新日期：2013-08-01 00:00:00

abstract：:Diagnostic reference levels (DRLs) for medical x-ray procedures are being implemented currently in the Netherlands. By order of the Dutch Healthcare Inspectorate, a survey has been conducted among 20 Dutch hospitals to investigate the level of implementation of the Dutch DRLs in current radiological practice. It turns...

journal_title：Health physics

authors： Bijwaard H,Valk D,de Waard-Schalkx I

更新日期：2015-04-01 00:00:00

abstract：:The combined expertise of radiation epidemiologists and laboratory experimentalists is required to accurately define health risks from exposure to a low/very low radiation dose. Although stochastic risk can be estimated when a known threshold dose is exceeded, risk must be inferred from data transference at sub-thresh...

journal_title：Health physics

authors： Dainiak N

更新日期：2016-03-01 00:00:00

abstract：:So far, in guidelines limiting exposure to electromagnetic fields, basic limits of intracorporal electric current densities have been recommended to prevent from nerve cell stimulation. They were based on experimental data and extrapolated to the general population with limited knowledge on the inter-individual variab...

journal_title：Health physics

authors： Leitgeb N,Schröttner J,Cech R

更新日期：2007-06-01 00:00:00

abstract：:Eleven years after the accidental loss of nuclear weapons in 1968, the fourth scientific expedition to Thule occurred. The estimated inventory of 1 TBq 239,240Pu in the marine sediments was unchanged when compared with the estimate based on the 1974 data. Plutonium from the accident had moved further away from the imp...

journal_title：Health physics

authors： Aarkrog A,Dahlgaard H,Nilsson K,Holm E

更新日期：1984-01-01 00:00:00

abstract：:Our analysis of data from the beagle project completed at the University of Utah has provided some comparisons that appear to be useful in testing the model proposed by Raabe of effective thresholds for induction of skeletal malignancy by bone-seeking radionuclides in beagles. Raabe's model predicted that cumulative s...

journal_title：Health physics

authors： Lloyd RD,Taylor GN,Fisher DR,Schlenker RA,Miller SC

更新日期：2000-12-01 00:00:00

abstract：:Thoron (Rn) exhalation from building materials has become increasingly recognized as a potential source for radiation exposure in dwellings. However, few studies have focused on mitigation strategies to reduce exposure from thoron and its progeny. Therefore, the purpose of this study is to (1) determine the reduction ...

journal_title：Health physics

authors： de With G,de Jong P,Donk JJ

更新日期：2016-11-01 00:00:00

abstract：:During the Full-Scale Radiological Dispersal Device Field Trials carried out in Suffield in 2012, several suites of detection and sampling equipment were used to measure and characterize the explosive dispersal of the short half-life radioactive tracer Lanthanum-140 ((140)La). The equipment deployed included networks ...

journal_title：Health physics

authors： Korpach E,Berg R,Erhardt L,Lebel L,Liu C

更新日期：2016-05-01 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：:Health physicists are usually concerned with small amounts of radioactivity and strive to develop techniques to measure them; however, following a terrorist attack involving radioactive materials the converse might be the case, and exposed persons may be heavily contaminated. The Human Monitoring Laboratory (HML) has ...

journal_title：Health physics

authors： Kramer GH,Capello K,Hauck BM,Brown JT

更新日期：2006-10-01 00:00:00

abstract：:Requirements for additional security measures for sealed radioactive sources have evolved since they were first implemented after the terrorist events of 11 September 2001. This paper will describe the sequence of those measures, commencing with the early orders issued by the U.S. Nuclear Regulatory Commission to the ...

journal_title：Health physics

authors： Klinger JG

更新日期：2016-02-01 00:00:00

abstract：:Databases are being created that contain verified and updated dosimetry and worker history information for workers at the Mayak Production Association. Many workers had significant external and internal exposures, particularly during the early years (1948-1952) of operation. These dosimetric and worker history data ar...

journal_title：Health physics

authors： Khokhryakov V,Suslova K,Aladova E,Vasilenko E,Miller SC,Slaughter DM,Krahenbuhl MP

更新日期：2000-07-01 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：:Spot urine samples are often taken for emergency radiobioassay to provide a quick dose assessment for contaminated individuals. The subsequent dosimetric analysis requires a urinary output normalization method to adjust spot sampling to daily urine excretion. A rapid specific gravity method that was developed for 24-h...

journal_title：Health physics

authors： Dai X,Kutschke K,Priest N

更新日期：2011-08-01 00:00:00

abstract：:A new type of soil sampling protocol is suggested which has applicability to surveys of environmental radioactivity. Often there is a higher concentration of radionuclides in the lower B horizon than in the upper A horizon of well-drained, well-developed soils. It is recommended that soils be sampled pedologically, i....

journal_title：Health physics

authors： Meriwether JR,Burns SF,Thompson RH,Beck JN

更新日期：1995-09-01 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：:Mathematical simulations and benchmark measurements were performed to assess the impact that normal variations in human calcium content have on in vivo K x-ray fluorescence measurements of lead in bone. Four sets of cortical bone tissue simulants were fabricated containing from 20.8% to 23.8% calcium (by weight) for m...

journal_title：Health physics

authors： Lodwick CJ,Lodwick JC,Spitz HB

更新日期：2011-05-01 00:00:00

abstract：:Between 1952 and 1992, more than 200 large radiobiology studies were conducted in research institutes throughout Europe, North America, and Japan to determine the effects of external irradiation and internal emitters on the lifespan and tissue toxicity development in animals. At Argonne National Laboratory, 22 externa...

journal_title：Health physics

authors： Haley B,Wang Q,Wanzer B,Vogt S,Finney L,Yang PL,Paunesku T,Woloschak G

更新日期：2011-06-01 00:00:00

abstract：:Occupational exposure to ionizing radiation from medical practices in China has been collected for a 7 y period between 2010 and 2016 from roughly 220 individual monitoring service providers through the Chinese Registry of Radiation Workers. Statistical dose distributions and characteristic tendencies are presented ba...

journal_title：Health physics

authors： Deng J,Fan S,Wang T,Hao S,Liu X,Guo W,Sun Q

更新日期：2019-12-01 00:00:00

abstract：:Fallout 239,240Pu concentrations in some autopsy tissues from the general population in Japan are described. Body burden and relative distribution among tissues of plutonium were obtained by extrapolating using the mass of relevant tissues of the normal Japanese adult. 239,240Pu-to-90Sr body burden ratio was obtained....

journal_title：Health physics

authors： Kawamura H,Tanaka G

更新日期：1983-01-01 00:00:00

abstract：:This paper broadly examines the historical development of radiation protection in medical practice through an examination of the interactions of those concerned with radiation protection and medical practice with emphasis on the last half century and on the role played by health physicists and the Health Physics Socie...

journal_title：Health physics

authors： Stannard JN,Kathren RL

更新日期：1995-11-01 00:00:00

abstract：:The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) in California is currently in operation with the goal to demonstrate fusion energy gain for the first time in the laboratory-also referred to as "ignition." Based on these demonstration experiments, the Laser Inertial Fusion Ener...

journal_title：Health physics

authors： Reyes S,Dunne M,Kramer K,Anklam T,Havstad M,Mazuecos AL,Miles R,Martinez-Frias J,Deri B

更新日期：2013-06-01 00:00:00

abstract：:Fifty-one soil samples were collected to a depth of 30 cm in the central and eastern region of the Brazilian state of Rio Grande do Norte. Concentrations of background radionuclides in soil samples were determined by gamma ray spectrometry with an HPGe detector. The average concentrations of 226Ra, 232Th, and 40K in t...

journal_title：Health physics

authors： Malanca A,Pessina V,Dallara G

更新日期：1993-09-01 00:00:00

abstract：:In 1959, the Test Manager's Committee to Establish Fallout Doses calculated estimated external gamma exposure at populated locations based upon measurements of external gamma-exposure rate. Using these calculations and estimates of population, we have tabulated the collective estimated external gamma exposures for com...

journal_title：Health physics

authors： Anspaugh LR,Church BW

更新日期：1986-07-01 00:00:00

abstract：:The photon interaction parameters such as mass attenuation coefficient (μ/ρ), effective atomic number (Z eff) and effective electron density (N el) must be identical for the phantom material and their tissue. In the present study, the μ/ρ, Z eff, and N el for muscle, breast, lung tissue have been computed, and their s...

journal_title：Health physics

authors： Manjunatha HC

更新日期：2014-02-01 00:00:00

abstract：:With the aim of developing genetic tests for elevated and reduced radiation sensitivity, the authors studied the correlations between various genotypes and frequencies of spontaneous and radiation-induced chromosome aberrations in human lymphocytes. Cytogenetic analysis and genotyping (19 sites of detoxification and D...

journal_title：Health physics

authors： Salnikova L,Chumachenko A,Belopolskaya O,Rubanovich A

更新日期：2012-07-01 00:00:00

abstract：:The U.S. National Oceanic and Atmospheric Administration's Field Research Division uses the HYRad-HYSPLIT dispersion model to assess hypothetical accidental releases of airborne radioactive materials at the Idaho National Laboratory in southeastern Idaho. The State of Idaho Department of Environmental Quality Idaho Na...

journal_title：Health physics

authors： Abbott ML

更新日期：2018-10-01 00:00:00