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Journal of Radiological Protection: Official Journal of the Society for Radiological Protection

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https://www.readbyqxmd.com/read/28936988/reducing-radiation-exposure-with-iterative-reconstruction-an-inter-and-intra-scanner-analysis
#1
Aaron Rohr, Jo Wick, Jacqueline Hill, Carissa Walter, Neville Irani, Shaun Best, Kirk Miller, Ryan Ash
Our purpose in this study was to compare delivered radiation exposure via Computed Tomography Dose Index Volume (CTDIvol) and Dose Length Production (DLP) measurements from computed tomography (CT) examinations performed on scanners with and without image-quality enhancing iterative reconstruction (IR) software. A retrospective analysis was conducted on randomly selected chest, abdomen, and/or pelvis CT examinations from three different scanners from January 1, 2013 to December 31, 2013. CTDIvol and DLP measurements were obtained from two CT scanners with and one CT scanner without IR software...
September 22, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28936986/characterizing-endourologist-learning-curve-during-percutaneous-nephrolithotomy-implications-on-occupational-dose-and-patients
#2
Jacobo Guiu-Souto, Carlos Otero-Martínez, Daniel Pérez-Fentes, Carlos Fernández-Baltar, Juan F Sánchez-García, Camilo García-Freire, Miguel Pombar, Juan Pardo-Montero
In this study we have characterized the learning curve of percutaneous nephrolithotomy procedures over 301 cases for six years. Different surrogate parameters of clinical expertise have been used, such as dose area product, total procedure time, fluoroscopy time and personal equivalent doses. In addition, two different endourologists have been monitored; one of whom was subjected to a specific Radiation Protection training (ICRP 85). Eye lens dose is estimated from thermoluminescent dosimeters. Significant differences are observed between both endourologists, especially in the fluoroscopy time...
September 22, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28925920/low-radon-exposure-and-mortality-among-jouac-uranium-miners-an-update-of-the-french-cohort-1946-2007
#3
Estelle Rage, Sylvaine Caër-Lorho, Dominique Laurier
After the extension of the French cohort of uranium miners with the inclusion of workers employed in the Jouac mines, this article seeks to describe the new Jouac cohort and to estimate mortality risks, as well as to quantify their relation to radon exposure in this extended cohort. The Jouac cohort includes 458 miners hired by the Société des Mines de Jouac between 1957 and 2001. As there is no measurement of radon exposure before 1978 were unavailable, only the post-1977 Jouac cohort (n=314) has been included in the French cohort, creating an extended cohort of 5400 French uranium miners followed up from 1946 to 2007...
September 19, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28920582/an-age-specific-biokinetic-model-for-iodine
#4
Richard Wayne Leggett
This paper reviews age-specific biokinetic data for iodine in humans and extends to pre-adult ages the baseline parameter values of the author's previously published model for systemic iodine in adult humans. Compared with the ICRP's current age-specific model for iodine introduced in Publication 56 (1989), the present model provides a more detailed description of the behavior of iodine in the human body; predicts moderately higher doses to the thyroid for short-lived isotopes of iodine; predicts similar doses to the thyroid for isotopes with half-time greater than a few hours; and, for most iodine isotopes, predicts substantially higher doses to salivary glands, stomach wall, liver, and kidneys...
September 18, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28914236/the-kr%C3%A3-mmel-germany-childhood-leukaemia-cluster-a-review-and-update
#5
Bernd Grosche, Peter Kaatsch, Birger G J Heinzow, Heinz-Erich Wichmann
The debate surrounding possible adverse health effects from the civil use of nuclear power under normal operating conditions has been on-going since its introduction. It was particularly intensified by the detection of three leukaemia clusters near nuclear installations, i.e. near the reprocessing plants in Sellafield and Dounreay, UK, and near the Krümmel nuclear power plant, Germany, the last of which commenced between 1990 and 1991 and was first described in 1992; it continued until 2003, and an elevated risk up to 2005 has been reported in the literature...
September 15, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28914233/lessons-from-two-cases-of-radiation-induced-skin-injuries-in-fluoroscopic-procedures-in-bulgaria
#6
Desislava Kostova-Lefterova, Jenia Vassileva, M M Rehani
Radiation-induced injuries to patient skin as a result of fluoroscopy guided interventional procedures are infrequently reported, often misdiagnosed and there is a need to learn lessons from every injury. Methods: This paper describes two cases of radiation induced skin injuries that are, to the best of our knowledge, the first ever reported cases from Bulgaria and possibly from Eastern Europe, and would thus have educational value. Results: The important messages from the skin injuries reported here are: lack of awareness among part of the interventional specialists about the potential for radiation induced skin injury, misdiagnosis after injury happened because of lack of awareness and knowledge among general physicians, dermatologists and surgeons who followed up cases of skin injuries; lack of system to monitor patients with relatively high exposure; important role played by the medical physicist in diagnosing the injury and overall in initiating actions; role of training and informational material displayed in interventional facilities...
September 15, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28910264/estimation-and-comparison-of-the-radiation-effective-dose-during-coronary-computed-tomography-angiography-examinations-on-single-source-64-mdct-and-dual-source-128-mdct
#7
Daryoush Khoramian, Soroush Sistani
GOAL: To estimate and compare the radiation dose associated with coronary computed tomography angiography (CCTA) examinations on two multi-detector CT scanners (MDCT), 64-MDCT and 128-MDCT, in daily practice. METHODS: Scan parameters of 90 patients undergoing retrospective electrocardiographic gating spiral CCTA exam were recorded during a period on a single-source 64-MDCT and a dual-source 128-MDCT, and average scan parameters were derived that were used for dosimetry...
September 14, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28901298/summaries-of-articles-in-this-issue
#8
(no author information available yet)
Summaries of the articles in this issue are given in the PDF file.
September 13, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28885191/radiation-dose-and-risk-in-children-undergoing-cardiac-interventions-performed-using-flat-detector-angiography-systems
#9
Anna Varghese, A Devi, Paul V George, Roshan Samuel Livingstone
The purpose of the study was to measure radiation doses and estimate risk from various beam projections in children undergoing cardiac interventions. The dose area product (DAP) was measured for 11 patent ductus arteriosus device closure, PDA; 4 atrial septal defect device closure, ASD and 3 balloon pulmonary valvuloplasty, BPV interventions performed using flat detector system. Total mean DAP for PDA, ASD and BPV were 1.9 Gycm2, 9.8 Gycm2 and 6.2 Gycm2 respectively. The fluoroscopic kerma dose rates increased by 10%, 33% and 92% when changing projection from posterior-anterior to lateral projection for PDA interventions among infants, <5yrs and > 5yrs respectively...
September 8, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28871075/dose-assessment-from-chronic-exposure-to-industrial-norm-in-iron-ore-processing
#10
Franck Dal Molin, Raymond Fisher, David Frost, David R Anderson, David Read
Radiological exposures due to naturally occurring radioactive material (NORM) can occur during a wide range of work-related activities in the mineral processing and chemical industries. However, evaluation of such exposures in industrial settings remains a difficult exercise owing inter alia to the large number of personnel, operations and plants affected; assumptions that often have to be made concerning the actual duration and frequency of exposures; the complex chemistry and radioactive disequilibria involved and typically, the paucity of historical data...
September 5, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28857051/multiple-authorisation-radiological-assessment-tool
#11
Paul Dale, David Copplestone, Victor Peredo-Alvarez, Andrew Tyler
No abstract text is available yet for this article.
August 31, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28857049/more-than-ever-comment-on-chernobyl-and-fukushima-where-are-we-now
#12
Jungchun Ho, Patricia Chiao-Tzu Lee, Peter Wushou Chang
No abstract text is available yet for this article.
August 31, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28854153/report-on-the-accident-at-windscale-no-1-pile-on-10-october-1957
#13
William Penney, Basil F J Schonland, J M Kay, Jack Diamond, David E H Peirson
A serious fire developed in the core of a nuclear reactor at Windscale Works, Sellafield, northwest England, which led to the release of significant quantities of radioactive material into the environment during 10-11th October, 1957. In 1957, Windscale Works was operated by the United Kingdom Atomic Energy Authority (UKAEA), and on 15th October it was announced by the Chairman of the UKAEA that a Committee of Inquiry had been established under the chairmanship of Sir William Penney to conduct an investigation into the accident...
August 30, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28836506/unintended-and-accidental-medical-radiation-exposures-in-radiology-guidelines-on-investigation-and-prevention
#14
Colin J Martin, J Vassileva, Eliseo Vano, M Mahesh, Steve Ebdon-Jackson, K Ng, Donald P Frush, R Loose, John Damilakis
This paper sets out guidelines for managing radiation exposure incidents involving patients in diagnostic and interventional radiology. The work is based on collation of experiences from representatives of international and national organizations for radiologists, medical physicists, radiographers, regulators, and equipment manufacturers, derived from an International Atomic Energy Agency Technical Meeting. More serious overexposures can result in skin doses high enough to produce tissue reactions, in interventional procedures and computed tomography, most notably from perfusion studies...
August 24, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28812981/the-experimental-study-on-the-emanation-power-of-a-flow-through-thoron-source-made-from-incandescent-gas-mantles
#15
Yunxiang Wang, Lei Zhang, Qiuju Guo
To improve the quality of the calibration of thoron concentration activity measurement, an experimental study on the emanation power of a flow-through thoron source based on incandescent gas mantles was carried out in this paper. The thoron activity concentrations of the outflowed air from the flow-through source were measured using RAD7, and the quantitative relationship between thoron concentrations and flowrates was studied through theoretical analysis, and the thoron emanation powers were obtained from the fitting of the relationship above...
August 16, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28812980/application-of-an-in-vitro-digestion-model-for-210po-bioaccessibility-assessment-in-seafood
#16
Carla Roselli, Donatella Desideri, Laura Feduzi, Lucia Ugolini, Maria Assunta Meli
This study aims to investigate the bioaccessibility of 210Po in seafood and the impact of food preparation on this radionuclide. Polonium bioaccessibility is the fraction of 210Po mobilized from food matrices into digestive extractants when applying an in vitro digestion model. The degree of bioaccessibility of 210Po in food has important implications for estimating ingestion doses from this radionuclide. The simulation of gastrointestinal digestion was divided into three stages through the use of synthetic saliva, gastric and bile-pancreas solutions...
August 16, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28748829/dose-assessment-following-an-overexposure-of-a-worker-at-a-swiss-nuclear-power-plant
#17
Claude J Bailat, Jean-Pascal Laedermann, Sébastien Baechler, Laurent Desorgher, Abbas Aroua, François O Bochud
AIM: The aim of this work was to assess the doses received by a diver exposed to a radiation source during maintenance work in the fuel transfer pool at a Swiss nuclear power plant, and to define whether the statutory limit was breached or not. METHOD: Onsite measurements were carried out and different scenarios were simulated using the MicroShield Software and the MCNPX Monte Carlo radiation transport code to estimate the activity of the irradiating object as well as the doses to the limbs and the effective dose delivered to the operator...
July 27, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28741602/journal-of-radiological-protection-now-offers-reviewer-recognition-with-publons
#18
Maggie Simmons
No abstract text is available yet for this article.
July 25, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28741601/obituary-andr%C3%A3-allisy-1924-2017
#19
Hans Menzel
No abstract text is available yet for this article.
July 21, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28726678/collateral-contamination-concomitant-to-the-polonium-210-poisoning-of-mr-alexander-litvinenko
#20
John Harrison, Tracy Smith, Tim Fell, Jenny Smith, George Ham, Richard Haylock, Alan Hodgson, George Etherington
Mr Litvinenko died on 23 November 2006, having been poisoned with polonium-210 on 1 November, with evidence of a previous poisoning attempt during October 2006. Measurements of (210)Po in urine samples were made for a large number of people to determine whether they may have been contaminated. In the majority of cases, measured levels were attributable to the presence of (210)Po from normal dietary sources. For a small number of cases, elevated levels provided evidence of direct contamination associated with the poisonings...
July 20, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
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