Comparison of sliced and whole lung sets for the LLNL and JAERI torso phantoms using GE detectors.

abstract：:The assessment of doses related to exposures to ionizing radiation is an essential part of all applications of ionizing radiation including radiation medicine, radiation protection, radiation biology, radiation epidemiology, and also industrial uses of radiation. Absorbed dose is generally considered to be the fundame...

journal_title：Health physics

authors： Menzel HG

更新日期：2019-02-01 00:00:00

abstract：:The radiation safety implications following the administration of 131I for the treatment of Grave's disease to a patient undergoing home-based renal dialysis was investigated. External dose-rate measurements from the patient revealed a peak value at around day 2, post administration. The effective half-life was determ...

journal_title：Health physics

authors： Simpson JB,Godwin GA

更新日期：2006-12-01 00:00:00

abstract：:Exposure to spark discharges may occur beneath high voltage transmission lines when contact is initiated with a conductive object (such as a motor vehicle) with the spark discharge mediated by the ambient electric field from the line. The objective of this study was to assess whether such exposures could interfere wit...

journal_title：Health physics

authors： Korpinen L,Kuisti H,Tarao H,Virtanen V,Pääkkönen R,Dovan T,Kavet R

更新日期：2016-01-01 00:00:00

abstract：:This paper details the construction of a 137Cs gamma calibration curve that has been established for dicentric assay and the testing and validation of the curve through biological dosimetry in three situations of suspected workplace overexposure that arose accidentally or through negligence or lack of appropriate safe...

journal_title：Health physics

authors： Hadjidekova V,Hristova R,Ainsbury EA,Atanasova P,Popova L,Staynova A

更新日期：2010-02-01 00:00:00

abstract：:We are considering some aspects related to the decontamination activities of about 50 houses affected by 137Cs in Goiânia. We describe the way these contaminations occurred, the instruments used, and the procedures. We also discuss the dose limits established for decontamination and the consequences resulting from thi...

journal_title：Health physics

authors： da Silva CJ,Delgado JU,Luiz MT,Cunha PG,Barros PD

更新日期：1991-01-01 00:00:00

abstract：:The processes of uranium extraction, purification, and manufacture involve the risk of chemical intoxication. Acute uranium poisoning elicits renal failure which in turn may lead to death. Great efforts have been put into the search for a protective agent for acute uranium poisoning. Several chelating agents such as E...

journal_title：Health physics

authors： Ubios AM,Braun EM,Cabrini RL

更新日期：1994-05-01 00:00:00

abstract：:Risk assessment of exposure to sources of radiation is an important tool for national governments in regulating radionuclide emissions and thus reducing radiation doses for the general public. For this reason radiation doses from sources throughout The Netherlands have been analyzed. For sources with well-defined loca...

journal_title：Health physics

authors： Janssen MP,Blaauboer RO,Pruppers MJ

更新日期：1998-06-01 00:00:00

abstract：:Program Area Committee 5 of the National Council on Radiation Protection and Measurements (NCRP) focuses its activities on environmental radiation and radioactive waste issues. The Committee completed a number of reports in these subject areas, most recently NCRP Report No. 175, Decision Making for Late-Phase Recovery...

journal_title：Health physics

authors： Chen SY,Napier B

更新日期：2016-02-01 00:00:00

abstract：:Study of the sorption of 99mTc radiopharmaceutical compounds by soils has assessed the fate of these compounds in the event of a surface spill and examined the potential of these compounds as hydrologic tracers. Sorption from deionized water, filtered Missouri River water, and artificial seawater by five surface soils...

journal_title：Health physics

authors： Jurisson S,Gawenis J,Landa ER

更新日期：2004-10-01 00:00:00

abstract：:For much of the 20th century, U.S. radiation protection policies were similar to those elsewhere in the world, in large part because the International Commission on Radiological Protection (ICRP) and the National Council on Radiation Protection and Measurements (NCRP) were closely aligned. In the 1970s, several U.S. r...

journal_title：Health physics

authors： Boyd MA

更新日期：2015-02-01 00:00:00

abstract：:This paper describes two nondestructive measurement techniques for determining the radioactivity in a homogeneous organ phantom with an acceptable error and the capability of being traceable to the National Institute of Standards and Technology. These two techniques are based on a method developed by Robley D. Evans i...

journal_title：Health physics

authors： Hui TE,Nichols LL,Olsen PC,McDonald JC

更新日期：1993-03-01 00:00:00

abstract：:The dosimetry for exposure to gamma radiation in the environment is reviewed, including the factors used to convert measurements of traceable quantities to effective dose equivalent. A value of 0.70 Sv Gy-1 is widely used to convert air kerma or absorbed dose-to-air to effective dose equivalent, but recent work shows ...

journal_title：Health physics

authors： Clark MJ,Burgess PH,McClure DR

更新日期：1993-05-01 00:00:00

abstract：:Cosmic rays make a significant, but not normally a dominant, contribution to the radiation dose of people all over the world. However, doses rise with altitude and the earth's magnetic field means that latitude also becomes important. Solar activity imposes a further, time dependent, variation. This article gives more...

journal_title：Health physics

authors： Kendall GM

更新日期：2000-11-01 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：: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：:Voxelized geometry such as those obtained from medical images is increasingly used in Monte Carlo calculations of absorbed doses. One useful application of calculated absorbed dose is the determination of fluence-to-dose conversion factors for different organs. However, confusion still exists about how such a geometry...

journal_title：Health physics

authors： Zhang J,Bednarz B,Xu XG

更新日期：2006-11-01 00:00:00

abstract：:In Region of Interest (ROI) Fluoroscopy, an ROI filter is inserted into the x-ray beam in order to decrease the patient exposure in the peripheral part of the field of view. A filter placement device has been designed and constructed for the practical implementation of ROI fluoroscopy. When unmodified spot films are r...

journal_title：Health physics

authors： Kezerashvili M,Rudin S,Bednarek D

更新日期：1997-01-01 00:00:00

abstract：:The real-time radiation monitoring system (RMS) in the Synchrotron Radiation Research Center (SRRC) has been upgraded significantly during the past years. The new framework of the RMS is built on the popular network technology, including Ethernet hardware connections and Web-based software interfaces. It features virt...

journal_title：Health physics

authors： Sheu RJ,Wang JP,Chen CR,Liu J,Chang FD,Jiang SH

更新日期：2003-10-01 00:00:00

abstract：:Based on anecdotal evidence and networking with colleagues at other facilities, it has become evident that some radiation safety departments are not adequately staffed and radiation safety professionals need to increase their staffing levels. Discussions with management regarding radiation safety department staffing o...

journal_title：Health physics

authors： Harvey RP

更新日期：2015-02-01 00:00:00

abstract：:Comparatively little research has been published on radioactive contamination from nuclear medicine patients using hospital toilet facilities. The present study was undertaken to obtain an estimate of the amount of restroom contamination found in a typical 700-bed community hospital as a result of nuclear medicine pro...

journal_title：Health physics

authors： Ho SY,Shearer DR

更新日期：1992-05-01 00:00:00

abstract：:The radiological consequences of using fly ash as a component of cement are discussed. Measurements of the activity concentrations of the fly ash and cement are reported together with measurements of emanation coefficients and exhalation rates. The radon-exhalation rate was found to be significantly lower in concrete ...

journal_title：Health physics

authors： Stranden E

更新日期：1983-02-01 00:00:00

abstract：:Proton therapy has the physical advantage of a Bragg peak that can provide a better dose distribution than conventional x-ray therapy. However, radiation exposure of normal tissues cannot be ignored because it is likely to increase the risk of secondary cancer. Evaluating secondary neutrons generated by the interactio...

journal_title：Health physics

authors： Matsumoto S,Koba Y,Kohno R,Lee C,Bolch WE,Kai M

更新日期：2016-04-01 00:00:00

abstract：:Following the tragic events of 11 September 2001, the nation has made significant strides in preparing for disasters and emergencies of all types. Federal funding to state, local, territorial, and tribal public health and healthcare systems has required an all-hazards preparedness approach with special focus on those ...

journal_title：Health physics

authors： Herrmann J

更新日期：2018-02-01 00:00:00

abstract：:The ICRP effective dose equivalent has been compared with a weighted dose equivalent, computed by treating the entire remainder instead of the sample of five remainder organs in the ICRP method as uniformly radiosensitive, for dose distributions from three common diagnostic exposures: chest, dental full-mouth and dent...

journal_title：Health physics

authors： Gibbs SJ

更新日期：1989-04-01 00:00:00

abstract：:A group of 219 subjects of Slovak adults from both sexes were studied for potassium body content by measuring the whole body activity of naturally occurring 40K using a whole body counter. The average body potassium value is 1.68 +/- 0.33 g kg(-1) body weight for males and 1.60 +/- 0.30 g kg(-1) for females. For both ...

journal_title：Health physics

authors： Lahham A,Fülöp M,Vladár M,Ragan P

更新日期：1998-03-01 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：:Concern about the threat of a terrorist attack with a Radiological Dispersal Device has increased considerably over the last few years, and this comes along with an immense challenge, especially regarding medical treatment of combined injuries with incorporated radioactive fragments. In such scenarios, the identificat...

journal_title：Health physics

authors： Majewski M,Nestler K,Veit DA,Diekmeyer B,Waldeck S,Port M,Becker BV

更新日期：2020-07-01 00:00:00

abstract：:Radon-222 diffusion length has been measured for 28 Danish soils and sediments. Samples were placed in a diffusion column connected to a 222Rn reservoir and the transport of 222Rn through the column was measured. The diffusion length was found by comparing the measured data to time-dependent diffusion theory. Dry silt...

journal_title：Health physics

authors： Søgaard-Hansen J,Damkjaer A

更新日期：1987-11-01 00:00:00

abstract：:The movement through the environment and the toxicity to plants of 99Tc have been studied. However, information is scanty on 99Tc toxicity to mammals even though this is the decisive criterion for assessing the consequences of releases of Tc. A critical tissue could be the thyroid because of its preferential accumulat...

journal_title：Health physics

authors： Gerber GB,Hegela M,Vankerkom J,Kirchmann R,Maisin JR,Lambiet-Collier M

更新日期：1989-08-01 00:00:00

abstract：:One of the main factors that affect the uncertainty in calculating the gamma-radiation absorbed dose rate inside a room is the variation in the degree of secular equilibrium of the considered radioactive series. A component of this factor, considered in this paper, is the release of radon (Rn) from building materials ...

journal_title：Health physics

authors： Orabi M

更新日期：2017-03-01 00:00:00