Abstract:
:A recent publication by in the April 28, 2004, issue of JAMA raises concern since it suggests that exposure to dental x rays during pregnancy could be responsible for human fetal growth retardation. Furthermore, the article could have a negative impact on the dental care of pregnant women who might fear the effect of dental radiography on their developing embryo. In our initial discussions, John Boice and I decided to communicate our concerns to the scientific and medical community. Boice has published a recent letter concerning the Hujoel paper. The Hujoel publication has very serious deficiencies. This Forum presents analyses of these deficiencies.
journal_name
Health Physjournal_title
Health physicsauthors
Brent RLdoi
10.1097/01.hp.0000152109.40007.35keywords:
subject
Has Abstractpub_date
2005-04-01 00:00:00pages
379-81issue
4eissn
0017-9078issn
1538-5159pii
00004032-200504000-00010journal_volume
88pub_type
杂志文章相关文献
HEALTH PHYSICS文献大全abstract::The possibility of the occurrence of radiation accidents is increasing in the Asian region. However, training/education programs for medical professionals have not been established to improve the medical preparedness for radiation emergencies in the Asian region. As one of the activities for radiation emergency medica...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0b013e3181cd413b
更新日期:2010-06-01 00:00:00
abstract::A group of workers internally contaminated with Am have been followed for about 12 years. The source of contamination was AmO2 powder used for production of AmBe neutron sources and other applications. The production of some radionuclide sources included chemical treatment of the original material, which transformed t...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0b013e3181d18e2e
更新日期:2010-10-01 00:00:00
abstract::The concentrations and the organ distribution patterns of 228Th, 230Th and 232Th in two 9-y-old dogs of our beagle colony were determined. The dogs were exposed only to background environmental levels of Th isotopes through ingestion (food and water) and inhalation as are humans. The organ distribution patterns of the...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-198803000-00006
更新日期:1988-03-01 00:00:00
abstract::Unusual reported dose equivalents due to high-energy photons for two individuals prompted the investigation of the effects of severe heating conditions expected in closed vehicles during southwestern summer months on commercial film dosimeters. A historical review of dosimetry records revealed several additional repor...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199104000-00018
更新日期:1991-04-01 00:00:00
abstract::This paper describes an analytically based method for modeling the time-dependent radionuclide areal densities of contaminated soil surface layers when the soil experiences simultaneous leaching, surface erosion and chain radioactive decay. The model is used to predict time-dependent radionuclide areal densities in a ...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199712000-00006
更新日期:1997-12-01 00:00:00
abstract::In November 2007, the Wisconsin Division of Public Health Hospital Disaster Preparedness Program State Expert Panel on Radiation Emergencies issued a report titled The Management of Patients in a Radiological Incident. Gundersen Lutheran Health System was selected to conduct a demonstration project to implement the re...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0b013e3181de4270
更新日期:2010-08-01 00:00:00
abstract::Radiation dose calculations in nuclear medicine depend on quantification of activity via planar and/or tomographic imaging methods. However, both methods have inherent limitations, and the accuracy of activity estimates varies with object size, background levels, and other variables. The goal of this study was to eval...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0b013e3181e28cdb
更新日期:2010-11-01 00:00:00
abstract::Institutional radiation safety programs routinely use wipe test sampling and liquid scintillation counting analysis to indicate the presence of removable radioactive contamination. Significant volumes of liquid waste can be generated by such surveillance activities, and the subsequent disposal of these materials can s...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199703000-00016
更新日期:1997-03-01 00:00:00
abstract::An unventilated 70 m underground space, with 2.1 m high ceilings and an inner set of concrete walls to damp vibrations, was discovered to have relatively stable radon levels of ~1,080 Bq m over a 1-y period. The addition of radium sources was not required to achieve high and somewhat variable radon levels, as these ar...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0000000000001047
更新日期:2019-06-01 00:00:00
abstract::The National Ignition Facility (NIF) has been designed to accommodate some challenging radiological conditions. The high prompt neutron source (up to 1.6 × 10(19) neutrons per shot) results in the need for significant fixed shielding. Concrete shielding approximately 2 m thick is used for the primary (target bay) shie...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0b013e31828cfb2c
更新日期:2013-06-01 00:00:00
abstract::Radio frequency currents in the human body, induced by high-frequency and medium-frequency high-power broadcast antennas, were studied theoretically and experimentally. An analytical formula was derived to calculate the foot currents in a grounded semispheroidal model of the human body. The model agrees within 30% wit...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199403000-00001
更新日期:1994-03-01 00:00:00
abstract::Electromagnetic interference with critical medical care devices has been reported by various groups. Previous studies have demonstrated that volumetric and syringe pumps are susceptible to false alarm buzzing and blocking when exposed to various electromagnetic sources. The risk of electromagnetic interference depends...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/01.HP.0000183559.25124.5d
更新日期:2006-04-01 00:00:00
abstract::The present study aimed to evaluate the effects of high background radiation (HBR) on mortality. A cohort of 31,604 men and women aged 30-74 y living in the study area in Guangdong Province, China, was followed during the period 1979-1998. The information on deaths and migrations of cohort members was collected by vis...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0b013e31822c7f1e
更新日期:2012-02-01 00:00:00
abstract::Calculations of Committed Effective Dose Equivalent (CEDE) due to inhalation using four of the five methods suggested in the United States Nuclear Regulatory Commission Regulatory Guide 8.34 (1992a) were performed to determine if any significant differences in the calculated value of the CEDE exist for typical power p...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199411000-00004
更新日期:1994-11-01 00:00:00
abstract::As in the past, the principle role of the scientist in the courtroom is to assist attorneys, judges, and jurors in understanding the complex scientific and technical issues before them. In the last decade, however, changes in the law and the increasing technical complexity of many disputes have introduced new factors ...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-200109000-00008
更新日期:2001-09-01 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
pub_type: 杂志文章
doi:10.1097/HP.0b013e3181ab3ccf
更新日期:2010-02-01 00:00:00
abstract::The design and performance of a positionally sensitive system for the laser read-out of dosimetric information contained in LiF chips and a specially designed composite detector having a thin LiF layer is reported. A 2 cm X 3 cm X 0.254 mm LiF layer was successfully manufactured with a glass backing; however, this was...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199010000-00004
更新日期:1990-10-01 00:00:00
abstract::Environmental releases of tritium oxide at a number of Department of Energy nuclear weapons facilities contribute to a significant portion of environmental dose. Several conversion factors are utilized in the estimation of human impact from these releases, e.g., dispersion coefficients, consumption rates, uptake facto...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199909000-00007
更新日期:1999-09-01 00:00:00
abstract::Newborn (1-2 days old) and weanling (6 wk old) miniature pigs were injected intravenously with 239Pu citrate. Animals from each age group were killed at intervals over a 28-day period to obtain distribution and retention data. The most notable difference between the two age groups was in hepatic deposition and retenti...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-198305000-00007
更新日期:1983-05-01 00:00:00
abstract::Determining the consumption of milk contaminated with 131I, resulting from atmospheric nuclear weapons tests conducted at the Nevada Test Site, by the United States population during the 1950s constitutes one part of the methodology used by the National Cancer Institute to assess radiation exposures to Americans. In o...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199011000-00013
更新日期:1990-11-01 00:00:00
abstract::Weathering of fuel particles and the subsequent leaching of radionuclides causes 90Sr mobility in Chernobyl soils to increase with time after deposition. Studies of 90Sr speciation in soils collected in 1995 and 1996 from the Chernobyl 30-km exclusion zone have been used to calculate rates of fuel particles dissolutio...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199903000-00006
更新日期:1999-03-01 00:00:00
abstract::Continuously repeated or frequent periodic measurements of the radiation environment in the absence of an identified source of ionizing radiation provide large data sets on the ambient background. Statistical evaluation of these data allows for the identification and quantification of the relevant background distribut...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0b013e318279f3a5
更新日期:2013-03-01 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
pub_type: 杂志文章
doi:10.1097/00004032-198701000-00001
更新日期:1987-01-01 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
pub_type: 杂志文章
doi:10.1097/00004032-199012000-00006
更新日期:1990-12-01 00:00:00
abstract::Elsewhere in this issue, Robin Elliott outlined a successful program for performing annual radiation safety management program audits. The results of such audits provide a useful means of evaluating and correcting deficiencies or weaknesses in a radiation safety program. At our institution we also perform an annual au...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199911001-00003
更新日期:1999-11-01 00:00:00
abstract::The use of epithermal neutron beam in clinical trials of Boron Neutron Capture Therapy for patients with malignant brain tumors had been carried out for half a decade at the Brookhaven's Medical Reactor. The decision to permanently close this reactor in 2000 cut short the efforts to implement a new conceptual design t...
journal_title:Health physics
pub_type: 杂志文章
doi:
更新日期:2004-05-01 00:00:00
abstract::Radionuclide decorporation is the only effective method of reducing radiation dose for persons contaminated accidentally. In this study, dogs that had inhaled a moderately soluble aerosol of 244Cm2O3 were treated with either discrete intravenous injections of the chelating agent diethylenetriaminepentaacetic acid (Zn-...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199204000-00002
更新日期:1992-04-01 00:00:00
abstract::Design and associated good practices are described for a modular glovebox connector to improve control of radioactive and chemically toxic materials. The connector consists of an anodized aluminum circular port with a mating spacer, gaskets, and retaining rings for joining two parallel ends of commercially available o...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/00004032-199901000-00011
更新日期:1999-01-01 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
pub_type: 杂志文章
doi:10.1097/HP.0b013e3181f725af
更新日期:2011-05-01 00:00:00
abstract::Ionizing radiation is a known and well-quantified human cancer risk factor, based on a remarkably consistent body of information from epidemiological studies of exposed populations. Typical examples of risk estimation include use of Japanese atomic bomb survivor data to estimate future risk from radiation-related canc...
journal_title:Health physics
pub_type: 杂志文章
doi:10.1097/HP.0b013e3181b1871b
更新日期:2009-11-01 00:00:00