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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
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Measurement of 238U, 232Th, 222Rn and 220Rn Contents in Optical Contact Lenses: Resulting Alpha and Beta Equivalent Doses to the Eye Tissues of Adult Patients. Health Phys. (IF 2.2) Pub Date : 2023-10-18 M A Misdaq, B Elouardi
To estimate equivalent doses received by eye tissues of patients, contents of uranium (238U), thorium (232Th), radon (222Rn), and thoron (220Rn) were determined inside various optical contact lenses used for vision correction. 238U, 232Th, 222Rn, and 220Rn contents varied between (3.44 ± 0.24) mBq kg-1 and (18.3 ± 1.28) mBq kg-1, (0.57 ± 0.04) mBq kg-1 and (3.53 ± 0.25) mBq kg-1, (3.44 ± 0.24) mBq
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Development of Respiratory Tract Organs for ICRP Pediatric Mesh-type Reference Computational Phantoms. Health Phys. (IF 2.2) Pub Date : 2023-10-12 Chansoo Choi, Bangho Shin, Yeon Soo Yeom, Chan Hyeong Kim, Wesley E Bolch, Derek W Jokisch, Haegin Han, Choonsik Lee, Beom Sun Chung
As part of the activities of the International Commission on Radiological Protection (ICRP) Task Group 103, the present study developed a new set of respiratory tract organs consisting of the extrathoracic, bronchial, bronchiolar, and alveolar-interstitial regions for newborn, 1-, 5-, 10-, and 15-y-old males and females for use in pediatric mesh-type reference computational phantoms. The developed
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Underestimation of Occupational Radiation Exposure During Endovascular Abdominal Aortic Aneurysm Repair. Health Phys. (IF 2.2) Pub Date : 2023-10-11 Hsien-Wen Chiang, Tzu-Chao Chuang, Tou-Rong Chen
During interventional procedures of endovascular abdominal aortic aneurysm repair (EVAR), the dosimeter was conventionally placed on chest facing toward the surgical table, instead of the main source of scatter radiation. Purpose of this study is to evaluate the underestimation of occupational radiation exposure. Phantom experiments were performed in a hybrid operating room equipped with an interventional
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Is It Appropriate to Completely Eliminate Contact Shielding During CT Examination? A Discourse Based on Experimental Findings. Health Phys. (IF 2.2) Pub Date : 2023-10-04 Jiwei Chen, Jianchun Tu, Shengyan Huang, Zhenhua Zhu, Yu Tu
Through the integration of experimental data and literature, this study examines whether complete elimination of contact shielding during CT examination is warranted, with a particular focus on potential impacts to children's thyroid and pregnant women, as well as limitations associated with contact shielding. Methods: The thermoluminescent dosimeter (TLD) tablets were inserted into the phantom's five
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Radiation Protection Considerations for Cancer Patients With End-Stage Renal Disease Receiving 131I Treatment. Health Phys. (IF 2.2) Pub Date : 2023-10-04 Matthew Louis, Emmanuel M Mate-Kole, Landon Aziz, Shaheen A Dewji
Differentiated thyroid cancer (DTC) is commonly treated first with a partial or complete thyroidectomy, followed by radioiodine (RAI) ablative therapy to eliminate remaining cancer cells. In such treatments, physical decay and urinary excretion are the primary means of 131I. As such, patients with impaired urinary ability clearance, such as patients with end-stage renal disease (ESRD) whose urinary
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Automated Workflow for Calculating the Collective and Average Effective Doses of Galactic Cosmic Radiation Received by Pilots in Taiwan from 2006 to 2021. Health Phys. (IF 2.2) Pub Date : 2023-09-04 Yu-Shiang Huang, Zi-Yi Yang, Rong-Jiun Sheu
On the basis of statistical data obtained from publicly available annual civil aviation reports, we developed an automated workflow for estimating the overall radiation exposure of aircraft pilots caused by galactic cosmic radiation. The workflow comprises several data-processing scripts that work with the batch analysis capability built in the NTHU Flight Dose Calculator. This method can quickly provide
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A New Software for the Calculation of Eye-lens Dosimetry Quantities Based on Dose-rate Coefficients. Health Phys. (IF 2.2) Pub Date : 2023-08-31 Jacques Dubeau, Jiansheng Sun
In the last decade, the International Commission on Radiological Protection recommended a reduction in the annual limits to the dose to the lens of the eye from 150 mSv to 20 mSv y-1, averaged over defined periods of 5 y, with no single year exceeding 50 mSv. To assist the health physics community in this task, many groups have calculated protection and operational fluence dose coefficients. This led
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Multicentric Study on the Relation between Perceived Department Radiation Shielding Policies and Staff Radiation Shielding Conscientiousness. Health Phys. (IF 2.2) Pub Date : 2023-08-16 Pieter-Jan Kellens,Gilles Soenens,Isabelle Van Herzeele,Richard McWilliams,Tze Yuan Chan,Robert Fisher,Klaus Bacher,Peter Vlerick
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Assessment of the Blue Light Ocular Hazard by Solar Measurements and the Impact of Selected Sunglasses Based upon the Limits of the International Commission on Non-Ionizing Radiation Protection Guideline. Health Phys. (IF 2.2) Pub Date : 2023-08-15 Martin Krejci,Giuseppe Caruso
A quantitative assessment of the blue light hazard for the human eye related to direct solar irradiation is presented. For six radiation situations, missing eye protection was compared to protection by nine different commercial sunglasses with and without an optimized blue light filter. Measurements of the solar irradiance were performed on Earth's surface as well as at an elevation of 12 km in the
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Enhanced Dosimetric Accuracy Using Quality Factor Compensation Method for In Vivo Electron Paramagnetic Resonance Tooth Dosimetry. Health Phys. (IF 2.2) Pub Date : 2023-08-10 Kwon Choi,Chang Uk Koo,Jeonghun Oh,Jiwon Kim,Jong In Park,Sung Hwan Kim,Jong Hoon Lee,Dae Gyu Kang,Sung-Joon Ye
We aim to develop a dose assessment method compensating for quality factors (Q factor) observed during in vivo EPR tooth dosimetry. A pseudo-in-vivo phantom made of tissue-equivalent material was equipped with one each of four extracted human central incisors. A range of Q factors was measured at tooth-depths of -2, 0, and 2 mm in the pseudo-in-vivo phantom. In addition, in vivo Q factors were measured
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Physiological Effects of Co-exposure to Ionizing Radiation and Noise within Occupational Exposure Limits. Health Phys. (IF 2.2) Pub Date : 2023-08-08 Wenyi Liu, Huaqing Liu, Weimin Gao, Liangbin Xie, Yanmei Cao
Workers are frequently exposed to the occupational hazards of ionizing radiation and noise. Co-exposure to these hazards is not well understood in terms of their physiological effects. The aim of this study was to investigate the physiological effects of co-exposure to ionizing radiation and noise within the occupational limit. This study extracted the physical examination parameters of workers who
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A Methodology for Calculating Inhalation Dose to Public Health Personnel Exposed to Material Resuspended from Evacuees Following the Detonation of a Fission Device. Health Phys. (IF 2.2) Pub Date : 2023-08-07 Lynn R Anspaugh, John Mauro, Nicole Briggs, Joseph Porrovecchio, William Amann, Adela Salame-Alfie, Armin Ansari
Following a nuclear fission event, there likely would be a large number of contaminated persons who would seek assistance at community reception centers to be established outside the affected area. This paper provides a methodology for calculating inhalation doses to public health and other response personnel at such facilities who would be receiving and assisting potentially contaminated persons from
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Leveraging Radiopharmaceutical Programmatic Collaboration for Management of Pretherapy and On-treatment Urinary Incontinence. Health Phys. (IF 2.2) Pub Date : 2023-08-07 Charles A Kunos, Bryan P Lemieux, Kimyli Recca, M Elizabeth Oates, Riham H El Khouli
Many parenteral radiopharmaceuticals available as anticancer therapy are filtered by the kidneys and excreted in the urine. Here, physician leaders of radiation medicine, nuclear medicine/molecular imaging, and the radiotheranostics programs as well as radiation safety officers, collaborated to develop a decision-making guideline for the administration of therapeutic radiopharmaceuticals in patients
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Investigation of the Radiographic Imaging Volume and Occupational Dose of Radiologic Technologists before and during the COVID-19 Pandemic. Health Phys. (IF 2.2) Pub Date : 2023-08-07 Nasser Shubayr
This study aimed to assess occupational radiation doses for radiologic technologists (RTs) in Saudi Arabia shortly before and during the COVID-19 pandemic, considering changes in imaging volume during that time. This retrospective study included the imaging volume data and the RTs' occupational dose records from a central hospital for 2019 and 2020. The occupational dose-in terms of annual and quarterly
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Update of the February 2022 CO 2 Paper and Related Documents in Health Physics. Health Phys. (IF 2.2) Pub Date : 2023-08-05 Kenneth W Skrable
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The Discovery of Radiocesium-bearing Microparticles Directly Delivered to a Person in Tokyo as a Result of the Fukushima Daiichi Nuclear Disaster. Health Phys. (IF 2.2) Pub Date : 2023-08-01 Shogo Higaki
The plume from Fukushima Dai-ichi Nuclear Power Plant (FDNPP) Unit 2, which reached the Tokyo metropolitan area on 15 March 2011 immediately after the FDNPP disaster, contained insoluble radiocesium-bearing microparticles (CsMPs). This study aimed to reanalyze a mask worn during the disaster to determine the ratio of CsMPs to radiocesium that directly arrived in the Tokyo metropolitan area as a plume
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Radon Flux Measurement System. Health Phys. (IF 2.2) Pub Date : 2023-07-12 Emily A Caffrey, Colby D Mangini, Arthur S Rood, Helen A Grogan, John E Till
Disposal of naturally occurring radioactive material (NORM) and technologically enhanced naturally occurring radioactive material (TENORM) waste in the State of Oregon is prohibited unless it can be demonstrated that the material is nonradioactive as defined by its radionuclide content and potential for emission into the environment. It was determined that a radon flux on the surface of the waste no
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Shielding Analysis of a Preclinical Bremsstrahlung X-ray FLASH Radiotherapy System within a Clinical Radiation Therapy Vault. Health Phys. (IF 2.2) Pub Date : 2023-07-12 Andrew Rosenstrom, Mario Santana-Leitner, Sayed Rokni, Muhammad Shumail, Sami Tantawi, John Kwofie, Shaheen Dewji, Billy W Loo
A preclinical radiotherapy system producing FLASH dose rates with 12 MV bremsstrahlung x rays is being developed at Stanford University and SLAC National Accelerator Laboratory. Because of the high expected workload of 6,800 Gy w-1 at the isocenter, an efficient shielding methodology is needed to protect operators and the public while the preclinical system is operated in a radiation therapy vault
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Evaluation of Atmospheric Conditions Leading to a Fumigation Event. Health Phys. (IF 2.2) Pub Date : 2023-07-04 Brian Viner, Steve Weinbeck, Christopher Sobecki
During the afternoon of 30 January 2022, the Savannah River Site experienced unusual temperature conditions leading to a fumigation event that triggered safety alarms and caused considerable confusion about the cause of the event. Normally, it is assumed that fumigation events occur early in the day once surface heating has begun. While most fumigation events are related to the breakup of a nocturnal
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Detection Capability of 89Sr and 90Sr Using Liquid Scintillation Counting. Health Phys. (IF 2.2) Pub Date : 2023-6-29 Ezekiel Blain, Kimi Nishikawa, Sherry A Faye, Amy Roselan, Adam G Burn, Miguel A Torres, Thomas M Semkow
We developed a new method for simultaneous determination of 89Sr and 90Sr with an emphasis on detectability. The samples were digested, and Sr was chemically purified followed by a single count on a liquid scintillation counter in three windows overlapping the 90Sr, 89Sr, and 90Y peaks. Gamma spectrometry was used to measure 85Sr, added for chemical recovery. The method was tested on 18 water samples
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Fetal and Maternal Atomic Bomb Survivor Dosimetry Using the J45 Pregnant Female Phantom Series: Considerations of the Kneeling and Lying Posture with Comparisons to the DS02 System. Health Phys. (IF 2.2) Pub Date : 2023-06-26 Sean J Domal, Camilo M Correa-Alfonso, Colin J Paulbeck, Keith T Griffin, Tatsuhiko Sato, Sachiyo Funamoto, Harry M Cullings, Stephen D Egbert, Akira Endo, Nolan E Hertel, Choonsik Lee, Wesley E Bolch
Organ dosimetry data of the atomic bomb survivors and the resulting cancer risk models derived from these data are currently assessed within the DS02 dosimetry system developed through the Joint US-Japan Dosimetry Working Group. In DS02, the anatomical survivor models are limited to three hermaphroditic stylized phantoms-an adult (55 kg), a child (19.8 kg), and an infant (9.7 kg)-that were originally