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Consequences of Violating Conditions of Counting Statistics Are Not Severe When Measuring Radon Progeny Concentrations with the Thomas and Kusnetz Methods. Health Phys. (IF 2.2) Pub Date : 2024-04-16 Phillip H Jenkins
When analyzing samples of radon progeny using the Thomas or Kusnetz methods, we violate one of the conditions of counting statistics because we use counting times that are not short compared with the half-lives of the radionuclides. The result is that we overestimate the uncertainties of the counts if we use counting statistics without correction. In this work, I describe the method by which I adjusted
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Replace the Linear No-threshold Model with a Risk-informed Targeted Approach to Radiation Protection. Health Phys. (IF 2.2) Pub Date : 2024-04-03 Rodican P Reed
The linear no-threshold (LNT) model may be useful as a simple basis for developing radiation protection regulations and standards, but it bears little resemblance to scientific reality and is probably overly conservative at low doses and low dose rates. This paper is an appeal for a broader view of radiation protection that involves more than just optimization of radiation dose. It is suggested that
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A Review of Recent Low-dose Research and Recommendations for Moving Forward. Health Phys. (IF 2.2) Pub Date : 2024-04-03 Charles Wilson, Grace G Adams, Pooja Patel, Kiran Windham, Colby Ennis, Emily Caffrey
The linear no-threshold (LNT) model has been the regulatory "law of the land" for decades. Despite the long-standing use of LNT, there is significant ongoing scientific disagreement on the applicability of LNT to low-dose radiation risk. A review of the low-dose risk literature of the last 10 y does not provide a clear answer, but rather the body of literature seems to be split between LNT, non-linear
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The Impact of the Linear No-threshold Hypothesis on Litigation. Health Phys. (IF 2.2) Pub Date : 2024-04-03 Alan Fellman, Dave Wiedis
As the basis of radiation safety practice and regulations worldwide, the linear no-threshold (LNT) hypothesis exerts enormous influence throughout society. This includes our judicial system, where frivolous lawsuits are filed alleging radiation-induced health effects caused by negligent companies who subject unwitting victims to enormous financial and physical harm. Typically, despite the lack of any
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Society and Nuclear Energy: What Is the Role for Radiological Protection? Health Phys. (IF 2.2) Pub Date : 2024-04-03 Wade Allison
The harm that society expects from ionizing radiation does not match experience. Evidently there is some basic error in this assumption. A reconsideration based on scientific principles shows how simple misunderstandings have exaggerated dangers. The consequences for society are far-reaching. The immediate impact of ionizing radiation on living tissue is destructive. However, this oxidative damage
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Science-informed Policy Making for Protecting People and the Environment from Radiation. Health Phys. (IF 2.2) Pub Date : 2024-04-03 David Borrego, Jonathan S Nagata, Michael A Boyd, Sara D DeCair, Lauren R Matakas, Ellen W Wang, David J Pawel, Armin J Ansari
The process to arrive at the radiation protection practices of today to protect workers, patients, and the public, including sensitive populations, has been a long and deliberative one. This paper presents an overview of the US Environmental Protection Agency's (US EPA) responsibility in protecting human health and the environment from unnecessary exposure to radiation. The origins of this responsibility
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Protracted Exposure to a Sub-background Radiation Environment Negatively Impacts the Anhydrobiotic Recovery of Desiccated Yeast Sentinels. Health Phys. (IF 2.2) Pub Date : 2024-04-03 Michel R Lapointe, Taylor Laframboise, Jake Pirkkanen, T C Tai, Simon J Lees, Sergio R Santa Maria, Sujeenthar Tharmalingam, Douglas R Boreham, Christopher Thome
Experiments that examine the impacts of subnatural background radiation exposure provide a unique approach to studying the biological effects of low-dose radiation. These experiments often need to be conducted in deep underground laboratories in order to filter surface-level cosmic radiation. This presents some logistical challenges in experimental design and necessitates a model organism with minimal
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A Revised System of Radiological Protection Is Needed. Health Phys. (IF 2.2) Pub Date : 2024-04-03 Bobby R Scott
The system of radiological protection has been based on linear no-threshold theory and related dose-response models for health detriment (in part related to cancer induction) by ionizing radiation exposure for almost 70 y. The indicated system unintentionally promotes radiation phobia, which has harmed many in relationship to the Fukushima nuclear accident evacuations and led to some abortions following
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If You Torture Your Data Long Enough, It Will Confess to Anything: On the Epidemiological Basis of the LNT Model. Health Phys. (IF 2.2) Pub Date : 2024-04-03 Yehoshua Socol
This note deals with epidemiological data interpretation supporting the linear no-threshold model, as opposed to emerging evidence of adaptive response and hormesis from molecular biology in vitro and animal models. Particularly, the US-Japan Radiation Effects Research Foundation's lifespan study of atomic bomb survivors is scrutinized. We stress the years-long lag of the data processing after data
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Theoretical Prediction of the 210Pb Burden in the Skeleton from Radon Exposure and Other Intake Routes. Health Phys. (IF 2.2) Pub Date : 2024-03-29 Jing Wang, Yuanyuan Liu, Bin Wu, Xiangpeng Meng, Yu Wang, Jianping Cheng
The 210Pb burden in the skeleton is a measurement value suitable for the estimation of the cumulative exposure to radon, based on which the resultant risk of lung cancer can be derived. There have been a handful of studies that successfully measured 210Pb activity in the bones of volunteers who had chronic exposure to high concentrations of radon occupationally or in their residences. However, the
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Feasibility of Liver Transplantation after 90Y Radioembolization: Lessons from a Radiation Protection Incident. Health Phys. (IF 2.2) Pub Date : 2024-03-27 Marine Soret, Jacques-Antoine Maisonobe, Philippe Maksud, Stéphane Payen, Manon Allaire, Eric Savier, Charles Roux, Charlotte Lussey-Lepoutre, Aurélie Kas
Radioembolization using 90Y is a growing procedure in nuclear medicine for treating hepatocellular carcinoma. Current guidelines suggest postponing liver transplantation or surgical resection for a period of 14 to 30 d after radioembolization to minimize surgeons' exposure to ionizing radiation. In light of a radiation protection incident, we reevaluated the minimum delay required between radioembolization
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High-rate Gamma Spectrometry Using a LaBr3(Ce) Scintillator with a Fast Pulse Shaping. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Tianyi Ren, Soo Hyun Byun
The performance of a LaBr3(Ce) gamma spectrometer at high count rates was investigated up to an input count rate of 1.3 Mcps. In order to make its pulse processing faster, a preamplifier provided by the detector manufacturer was eliminated, and the signal from the photomultiplier tube was fed directly to a digital pulse processing system. To accomplish both fast pulse processing and good energy resolution
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Saccharomyces Cerevisiae as a Model Organism for Retrospective Impedance Biodosimetry. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Amna Hassan, Kirk D Atkinson
Previous studies have shown that measuring changes in electrical impedance that follow radiation-induced suppression of metabolic activity in irradiated yeast cells can be used to determine radiation dose. The current work investigates the radiation response of Saccharomyces cerevisiae cells by using metabolic activity of cells as a damage indicator. Impedance biodosimetry was examined as a method
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A Perspective from Ontario Tech University Industrial Research Chairs on 20 Years of Capacity Building in Health Physics and Radiation Science. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Edward Waller, Kirk Atkinson, Anthony Waker
Ontario Tech University (University of Ontario Institute of Technology) is one of Canada's newest universities, having been incorporated in 2002. In 20 y, the University has increased enrollment from a few hundred students to over 10,000. The University was designed to be "market driven" and as such offered courses that had high market demand. The Faculty of Energy Systems and Nuclear Science was one
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3D Printed Lung Phantom for Individual Monitoring. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Kevin Capello, Marilyn Tremblay, Aryanna Schiebelbein, Noah Janzen
The Human Monitoring Laboratory, Health Canada (HML), has used a 3D printer to re-engineer its Lawrence Livermore National Laboratory (LLNL) foam lung sets (manufactured by Radiology Support Devices, Inc., Long Beach, CA). The foam sets are currently the HML standard for calibrating and performance testing lung-counting systems in Canada. This paper describes the process of creating and validating
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Factors Influencing Effects of Low-dose Radiation Exposure. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Carmel Mothersill, Colin Seymour, Alan Cocchetto, David Williams
It is now well accepted that the mechanisms induced by low-dose exposures to ionizing radiation (LDR) are different from those occurring after high-dose exposures. However, the downstream effects of these mechanisms are unclear as are the quantitative relationships between exposure, effect, harm, and risk. In this paper, we will discuss the mechanisms known to be important with an overall emphasis
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Optimizing the Positioning of Detectors for Improved Counting Efficiencies Using Monte Carlo Simulations. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Kevin Capello, Ryan Moffat, Aryanna Schiebelbein
The Human Monitoring Laboratory (HML) at Health Canada updated its whole-body counter with four new electrically cooled HPGe detectors. To optimize the counting efficiency of the new system, Monte Carlo simulation was used to model the whole-body counter using a reference BOMAB male phantom. The resulting modeled counting efficiencies showed that the best position to install the four new detectors
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A Study on Geographic Correlation between Indoor Radon Exposure and Leukemia Incidence in Canada. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Jing Chen
In Canada, leukemia is diagnosed at a rate of 15 cases per 100,000 persons and accounts for about 3% of all new primary cancers. In this study, geographical correlation between residential radon exposure and leukemia incidence was investigated at a provincial level with more accurate long-term radon measurement data in 21,330 homes and 10-y (2000-2009) age standardized incidence rates per 100,000 population
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Electron Paramagnetic Resonance (EPR) Biodosimetry with Human Teeth: A Crucial Technique for Acute and Chronic Exposure Assessment. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Lekhnath Ghimire, Edward Waller
Radiation exposure is a primary concern in emergency response scenarios and long-term health assessments. Accurate quantification of radiation doses is critical for informed decision-making and patient care. This paper reviews the dose reconstruction technique using both X- and Q-bands, with tooth enamel as a reliable dosimeter. Tooth enamel, due to its exceptional resistance to alteration over time
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Improving Calculations of Electron Eye-lens Operational Dose Coefficients Using the Monte Carlo Codes PENELOPE and MCNP6.2. Health Phys. (IF 2.2) Pub Date : 2024-3-25 Jacques Dubeau, Jiansheng Sun, Salah Djeffal, Fawaz Ali
After considering epidemiological studies on the induction of cataracts in individuals exposed to radiation, the International Commission on Radiological Protection recommended, in 2012, a reduction in the annual eye-dose limit of occupationally exposed workers. This imposed higher performance demands on existing dosimetry systems and the development of new dosimetry technologies. The operational quantity
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Evaluating Reception Center Models for Radiation Response Screening Capacity and Throughput Predictions. Health Phys. (IF 2.2) Pub Date : 2024-03-22 Lauren Finklea, Robert Goff, Erica Houghton
Introduction: The current fleet of nuclear reactors in the United States is mandated to provide evidence that surrounding jurisdictions can screen their populations should an incident occur. Capacity can be measured as throughput in reception centers used for screening. Due to the significant staffing and resources required to exercise screening capacity, most jurisdictions typically perform smaller
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Mechanical and Architectural Changes in Animal Bone Following Fast Neutron Irradiation. Health Phys. (IF 2.2) Pub Date : 2024-03-18 Eduardo Galiano, Jinlu Liu, Beide Ren, Penghao Xu
Damage to healthy bone following exposure to ionizing radiation has been well documented for at least seven decades. Among the reported effects are a transient increase in stiffness and a reduction in breaking strength. These changes have been linked to a decrease in osteoblast proliferation and differentiation, inducing cell cycle arrest, reducing collagen production, and increasing sensitivity to
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A Review of the Resuspension of Radioactively Contaminated Particles by Vehicle and Pedestrian Traffic-Current Theory, Practice, Gaps, and Needs. Health Phys. (IF 2.2) Pub Date : 2024-2-21 Michael D Kaminski, Nico Daiyega, Matthew Magnuson
The resuspension of radioactively contaminated particles in a built environment, such as from urban surfaces like foliage, building exteriors, and roadways, is described empirically by current plume and dosimetry models used for hazard assessment and long-term risk purposes. When applying these models to radiological contamination emergencies affecting urban areas, the accuracy of the results for recent
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ICNIRP Statement on Short Wavelength Light Exposure from Indoor Artificial Sources and Human Health. Health Phys. (IF 2.2) Pub Date : 2024-2-21 Sharon Miller, Christian Cajochen, Adele Green, John Hanifin, Anke Huss, Ken Karipidis, Sarah Loughran, Gunnhild Oftedal, John O'Hagan, David H Sliney, Rodney Croft, Eric van Rongen, Nigel Cridland, Guglielmo d'Inzeo, Akimasa Hirata, Carmela Marino, Martin Röösli, Soichi Watanabe
Concerns have been raised about the possibility of effects from exposure to short wavelength light (SWL), defined here as 380-550 nm, on human health. The spectral sensitivity of the human circadian timing system peaks at around 480 nm, much shorter than the peak sensitivity of daytime vision (i.e., 555 nm). Some experimental studies have demonstrated effects on the circadian timing system and on sleep
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Dose Measurements at Provision Proton Therapy Center. Health Phys. (IF 2.2) Pub Date : 2024-2-21 Naser Burahmah, Lawrence Heilbronn
Proton therapy is an advanced method for treating cancerous tumors, and its adoption has expanded significantly in recent years. The production of high-energy protons, however, may result in the creation of secondary neutrons and gamma rays. Hence, ensuring radiation safety at proton therapy centers is crucial, with shielding playing a vital role. This study aimed to evaluate the efficacy of the shielding
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Radiation Exposure Characteristics among Healthcare Workers: Before and After Japan's Ordinance Revision. Health Phys. (IF 2.2) Pub Date : 2024-02-01 Aiganym Imakhanova, Naoki Matsuda, Noboru Takamura, Noboru Oriuchi, Hiroshi Ito, Kazuo Awai, Takashi Kudo
Radioactive materials and ionizing radiation have both medical value and disease risks, necessitating radiation dose measurement and risk reduction strategies. The International Commission on Radiological Protection (ICRP) lowered the lens of the eye exposure limit, leading to Japan's revised "Ionizing Radiation Ordinance." However, the effects on radiation exposure in medical settings and compliance
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Assessment of Radiation Doses to the General Public around Nuclear Power Plants Based on Representative Person Concept. Health Phys. (IF 2.2) Pub Date : 2024-01-30 Ki Hoon Kim, Hyun Su Seo, Yong Ho Jin, Kwang Pyo Kim
The International Commission on Radiological Protection recommended that the representative person concept should be used in radiation dose assessment of the general public to specify exposed individuals. The objective of this study is to assess radiation doses of the residents around nuclear power plants (NPPs) in relation to the introduction of the representative person concept. Critical group candidates
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Continuing Steady Challenges Involved in the Lifting of Evacuation Orders after the Fukushima Daiichi Nuclear Power Plant Accident. Health Phys. (IF 2.2) Pub Date : 2024-01-22 Yurie Kobashi, Arifumi Hasegawa, Shunichi Yamashita
Steady efforts for recovery and reconstruction after the accident at the Fukushima Daiichi Nuclear Power Plant have been underway for 12.5 y. The present study reports on the world's first-ever efforts for a gradual and safe return to areas contaminated with radiation fallout and reconstruction support by providing an overview of the actual situation regarding the strategy for return, especially with
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Study on Correction Method of Counting Loss below the Threshold for Low Energy Radionuclides Based on Monte Carlo Simulation. Health Phys. (IF 2.2) Pub Date : 2024-01-22 Shuying Kong, Fei Tuo, Tianxiang Lu
In the absolute measurement method of nuclide radioactivity by the internal gas proportional counter, the reasonable correction of the small pulse counting loss is the key to obtaining the measurement results accurately. Considering the decay type and energy of radioactive gas nuclides, the influence of the low-energy beta particles and the wall effect counting loss on the activity measurement results
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Influence of the Method of Calculating the Effective Atomic Number on the Estimate of Fluorescence Yield for Metal Alloys of Biomedical Interest. Health Phys. (IF 2.2) Pub Date : 2024-01-22 Caroline V Garcia, Divanizia N Souza, Edson R Andrade
This study evaluates the influence of the method used to calculate the effective atomic number (Zeff) on the estimate of secondary radiation yielded under kilovoltage x-ray beams by metal alloys with a wide range of biomedical applications. Two methods for calculating Zeff (referred to here as M1 and M2) are considered, and six metallic alloys are investigated: Ti-6Al-4 V, Co-Cr-Mo, Ni-Cr-Ti, Ni-Cr
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Relationship between the Residual Cesium Body Contents and Individual Behaviors among Evacuees from Municipalities near the Fukushima Daiichi Nuclear Power Plant. Health Phys. (IF 2.2) Pub Date : 2024-1-22 Eunjoo Kim, Shozo Hashimoto, Kotaro Tani, Masayuki Naito, Yoshio Takashima, Tetsuo Ishikawa, Seiji Yasumura, Kenji Kamiya, Osamu Kurihara
To support estimations of early individual internal doses to residents who suffered from the 2011 accident at the Fukushima Daiichi Nuclear Power Plant (FDNPP), we have sought to use whole-body counter (WBC) measurement results of subjects who lived in municipalities neighboring the FDNPP at the time of the accident. These WBC measurements started several months after the accident; the targeted radionuclides
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How Hermann J. Muller Viewed the Ernest Sternglass Contributions to Hereditary and Cancer Risk Assessment. Health Phys. (IF 2.2) Pub Date : 2024-1-22 Edward J Calabrese, James Giordano
As one of the most influential radiation geneticists of the 20th century, Hermann J. Muller had a major role in the development and widespread acceptance of the linear no-threshold (LNT) dose response for hereditary and cancer risk assessments worldwide. However, a spate of historical reassessments have challenged the fundamental scientific foundations of the LNT model, drawing considerable attention
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Diagnostic Reference Levels of Radiographic and CT Examinations in Jordan: A Systematic Review. Health Phys. (IF 2.2) Pub Date : 2024-1-22 Kholoud Alzyoud, Sadeq Al-Murshedi, Andrew England
A comprehensive search was performed to examine the literature on diagnostic reference levels (DRL) for computed tomography (CT) and radiography examinations that are performed routinely in Jordan. EBSCO, Scopus, and Web of Science were used for the search. The acronym "DRL" and the additional phrase "dose reference levels" were used to search for articles in literature. Seven papers that reported
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Feasibility of Treatment Agents in Radioactive Iodine Separation from Waste Liquids. Health Phys. (IF 2.2) Pub Date : 2024-01-11 Masahiro Hirota, Shogo Higaki, Yoshiyuki Ishida, Daisuke Nakata, Keiji Terao, Shigeki Ito
To discharge waste liquid containing radioactive iodine into sewage systems, long-term storage or dilution with a large amount of water may be required until the radioactivity concentration reduces below the standard value. Processing the waste liquid could be easier if radioactive iodine could be separated from the water. This study verified the effectiveness of superabsorbent polymer and α-cyclodextrin
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Statistical Analysis of Radioactivity: Lamprecht Uranium Mine in Texas. Health Phys. (IF 2.2) Pub Date : 2023-12-26 Mark C Harvey, Nancy L Glenn Griesinger
The former Lamprecht uranium mine facility in Texas ceased operations well before the new millennium. However, decommissioning activities were never completed by the licensee. Consequently, a legal proceeding was authorized between state and licensee representatives. Meanwhile, state funds were used to hire an independent contractor to perform radiological surveys and assess the magnitude of residual
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Simple Moving Average Applied to "ISO Method" CPAM Concentration Estimates: An Unexpected Result. Health Phys. (IF 2.2) Pub Date : 2023-12-26 William C Evans
A surprisingly large amount of variance reduction has been observed when filtering International Organization for Standardization (ISO) "ISO Method" continuous particulate air monitor (CPAM) airborne radioactivity concentration estimates with a simple three-point moving average. This processing has relatively little lag relative to the amount of variance reduction obtained. The key factor producing
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Biodosimetry Based on Gamma-H2AX Quantification in Human Peripheral Blood Lymphocytes after Partial-body Irradiation. Health Phys. (IF 2.2) Pub Date : 2023-12-14 Li-Ping Ma, Jie Chen, Meng-Meng Liu, Juan Yan, Jia-Qi Xiang, Mei Tian, Ling Gao, Qing-Jie Liu
Quantification of gamma-H2AX foci can estimate exposure to ionizing radiation. Most nuclear and radiation accidents are partial-body irradiation, and the doses estimated using the total-body irradiation dose estimation formula are often lower than the actual dose. To evaluate the dose-response relation of gamma-H2AX foci in human peripheral blood lymphocytes after partial-body irradiation and establish
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Radiation Safety Education Adjustment in the Future: An HBCU's Response to Trends in Health Physics. Health Phys. (IF 2.2) Pub Date : 2024-01-01 Mark C Harvey
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Open Letter to the Health Physics Society Membership. Health Phys. (IF 2.2) Pub Date : 2024-01-01 Wayne M Glines,James E Tarpinian,Debra M Scroggs,Richard Poeton
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Response to Mark Harvey Regarding the Educational Curricula for Students Interested in Health Physics. Health Phys. (IF 2.2) Pub Date : 2024-01-01 Robert Emery,Janet Gutierrez
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Reply to Dapra-Repair Mechanism Discovered by ORNL Scientists. Health Phys. (IF 2.2) Pub Date : 2024-01-01 John Cardarelli
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History of the 1 mSv Public Dose Limit. Health Phys. (IF 2.2) Pub Date : 2023-12-01 Darrell R Fisher
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2023 STUDENT FELLOWSHIPS AND SCHOLARSHIPS: Presented by the Health Physics Society July 2023. Health Phys. (IF 2.2) Pub Date : 2023-12-01
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2023 AAHP DISTINGUISHED MEMBERSHIP: Presented by the Health Physics Society July 2023. Health Phys. (IF 2.2) Pub Date : 2023-12-01
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2023 AMERICAN ACADEMY OF HEALTH PHYSICS AWARDS: Presented by the Health Physics Society July 2023. Health Phys. (IF 2.2) Pub Date : 2023-12-01
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2023 50-YEAR MEMBERS: Presented by the Health Physics Society July 2023. Health Phys. (IF 2.2) Pub Date : 2023-12-01
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Evaluation of Deuterium Oxide Deposition Velocity Over a Forest Environment. Health Phys. (IF 2.2) Pub Date : 2023-11-27 Brian J Viner, Ashlee Swindle, Lucas Angelette, Candace J Langan, Wendy W Kuhne
Field experiments were performed to evaluate the deposition velocity of tritium oxide within a forest environment at the Savannah River Site near Aiken, SC. Field releases were designed to guide selection of deposition velocity values for use in safety-basis modeling. Six releases of deuterium oxide were conducted in 2020 and 2021 with corresponding air samples during and following each release. Samples
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Evaluation of the Performance of Different Types of Radiation Protection Gloves: A Cross-sectional Study. Health Phys. (IF 2.2) Pub Date : 2023-12-01 Mitsuyoshi Yasuda,Syoji Manabu,Tomoki Fuji,Noritaka Seino,Hiroyuki Watanabe,Hisaya Sato,Kyoichi Kato
Radiation exposure of a practitioner's fingers is a problem in interventional radiology, and radiation protection gloves (protective gloves) can help reduce such exposure. Several types of protective gloves are commercially available from various manufacturers. In the present study, we compared the protective effects and usability of four types of protective gloves. To investigate the radiation protection
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Enhancing Precision in L-band Electron Paramagnetic Resonance Tooth Dosimetry: Incorporating Digital Image Processing and Radiation Therapy Plans for Geometric Correction. Health Phys. (IF 2.2) Pub Date : 2023-11-08 Jong In Park, Chang Uk Koo, Jeonghun Oh, In Jung Kim, Kwon Choi, Sung-Joon Ye
Following unforeseen exposure to radiation, quick dose determination is essential to prioritize potential patients that require immediate medical care. L-band electron paramagnetic resonance tooth dosimetry can be efficiently used for rapid triage as this poses no harm to the human incisor, although geometric variations among human teeth may hinder accurate dose estimation. Consequently, we propose
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Response to Hamilton and Kendall Regarding Cumulative Dose. Health Phys. (IF 2.2) Pub Date : 2023-11-01 Cynthia H McCollough,Rebecca J Milman,Ioannis Sechopoulos,M Mahesh
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Case Studies of Fraud Associated with the Use of Radiation Sources: Practical Avoidance Strategies Based on Lessons Learned. Health Phys. (IF 2.2) Pub Date : 2023-10-30 R J Emery,D C Howell
Periodically the radiation protection profession has experienced purposeful deception practices that remained undetected for some time. Upon discovery, the cases of fraud revealed gaps in confirmation or validation practices that the radiation protection community should note. Summarized here is a convenience sample of actual cases of fraud involving radiation sources along with the exploited process
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Natural Radioactivity of Granitic Rocks and Their Health Risk around Ingesana Mountains, Sudan. Health Phys. (IF 2.2) Pub Date : 2023-10-20 Nooreldin Fadol, Ali Abdelrazig, Hajo Idriss, Yazeed Alashban, Nasser Shubayr
This work was carried out mainly to analyze radioactive elements 40K, 232Th, and 226Ra and non-radioactive elements in some granitic rocks and study their health risk for humans and non-humans. Radioisotope activity was evaluated using a high-purity germanium (HPGe) detector, and various radiological hazard indices were calculated. We also measured some non-radioactive elements using x-ray fluorescence
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Exploratory Data Analysis of the Groundwater Contaminants at the Former Panna Maria Uranium Recovery Facility. Health Phys. (IF 2.2) Pub Date : 2023-10-20 Mark C Harvey, Nancy L Glenn Griesinger
The former Panna Maria mill was a uranium recovery facility that operated from 1979 to December 1992. Sulfuric acid leach was used to process several tons of ore daily. Therefore, the groundwater was sampled at the site to monitor the concentration of background chemical pollutants. The purpose of this study was to perform exploratory data analysis to evaluate whether the arsenic, nickel, selenium
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Introducing DEPDOSE, a Tool to Calculate Dose Coefficients to Members of the Public for Radioactive Aerosols. Health Phys. (IF 2.2) Pub Date : 2023-10-19 John Klumpp,Luiz Bertelli,Keith Eckerman,Matthew Nelson,Liam Wedell,Mina Deshler,Sara Brambilla,Michael Brown
This paper presents DEPDOSE, an open-source computer application that combines the KDEP respiratory tract deposition fractions for inhaled aerosols with DC_PAK committed equivalent dose coefficients for a unit deposition in each region of the respiratory tract. DEPDOSE allows the user to rapidly produce tables of dose coefficients for workers and members of the public inhaling precisely defined, user-specified