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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/29769434/virtual-reality-based-adaptive-dose-assessment-method-for-arbitrary-geometries-in-nuclear-facility-decommissioning
#1
Yong-Kuo Liu, Nan Chao, Hong Xia, Min-Jun Peng, Abiodun Ayodeji
This paper presents an improved and efficient virtual reality-based adaptive dose assessment method (VRBAM) applicable to the cutting and dismantling tasks in nuclear facility decommissioning. The method combines the modeling strength of virtual reality with the flexibility of adaptive technology. The initial geometry is designed with the three-dimensional computer-aided design tools, and a hybrid model composed of cuboids and a point-cloud is generated automatically according to the virtual model of the object...
May 17, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29769433/medical-imaging-dose-optimization-from-ground-up-expert-opinion-of-an-international-summit
#2
Ehsan Samei, Hannu Jarvinen, Mika Kortesniemi, Georgios Simantirakis, Charles Goh, Anthony Wallace, Eliseo Vano, Adrian Bejan, M M Rehani, J Vassileva
As in any medical intervention, there is either a known or an anticipated benefit to the patient from undergoing a medical imaging procedure. This benefit is generally significant as demonstrated by the manner in which medical imaging has transformed clinical medicine. At the same time, when it comes to imaging that deploys ionizing radiation, there is a potential associated risk from radiation. Radiation risk has been recognized as a key liability in the practice of medical imaging, creating a motivation for radiation dose optimization...
May 17, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29749344/usefulness-of-cancer-free-survival-in-estimating-the-lifetime-attributable-risk-of-cancer-incidence-from-radiation-exposure
#3
Songwon Seo, Dal Nim Lee, Young-Woo Jin, Won Jin Lee, Sunhoo Park
Risk projection models estimating the lifetime cancer risk from radiation exposure are generally based on exposure dose, age at exposure, attained age, gender, and study population-specific factors, such as baseline cancer risks and survival rates. Because such models have been mostly based on the Life Span Study cohort of Japanese atomic bomb survivors, the baseline risks and survival rates in the target population should be considered when applying the cancer risk from Japanese atomic bomb survivors. The survival function used in risk projection models that are commonly used in radiological protection field to estimate cancer risk from medical or occupational exposure is based on all-cause mortality...
May 11, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29743379/a-fast-simulation-method-for-radiation-map-using-interpolation-in-virtual-environment
#4
Meng-Kun Li, Yong-Kuo Liu, Min-Jun Peng, Chun-Li Xie, Li-Qun Yang
In nuclear decommissioning, virtual simulation technology is a useful tool to achieve an effective work process by using virtual environments to represent the physical and logical scheme of a real decommissioning work. This technology is cost-saving and time-saving, with the capability to develop various decommissioning scenarios and reduce the risk of retrofitting. The method utilizes radiation map in virtual simulation as the bases for the assessment of exposure to virtual human. In this paper, we propose a fast simulation method using a known radiation source...
May 10, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29714719/optimization-of-environmental-remediation-how-to-select-and-use-the-reference-levels
#5
Mikhail I Balonov, Larisa Chipiga, Sergei Kiselev, Malgorzata Sneve, Tamara Yankovich, Gerhard Proehl
A number of past industrial activities and accidents have resulted in contamination of large areas at many sites of the world with radioactive material, giving rise to a need for remediation. According to ICRP and IAEA such situations should be managed as existing exposure situations (ExES). Control of exposures to the public in ExES is based on the application of appropriate reference levels (RLs) for residual dose to the public. The implementation of this potentially fruitful concept for optimization of remediation in various regions is hampered by a lack of practical experience and relevant guidance...
May 1, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29714717/dosimetric-factors-for-diagnostic-nuclear-medicine-procedures-in-a-non-reference-pregnant-phantom
#6
Laleh Rafat-Motavalli, Hashem Miri Hakimabad, Elie Hoseinian Azghadi
This study was evaluated the impact of using non-reference fetal models on the fetal radiation dose from diagnostic radionuclide administration. The 6 month pregnant phantoms including fetal models at 10th and 90th growth percentiles were constructed at either end of the normal range around the 50th percentile and implemented in the Monte Carlo N-Particle code version MCNPX 2.6. The code have been used then to evaluate the 99mTc S factors of interested target organs as the most common used radionuclide in nuclear medicine procedures...
May 1, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29714715/estimation-of-lung-absorption-parameters-for-oxides-of-sup-238-sup-pu
#7
Demetrio Gregoratto, Mike R Bailey
Following inhalation of an aerosol of relatively insoluble particles, it is
 usually found that the fractional dissolution rate of material retained in the lungs
 decreases with time, and the amount remaining undissolved can be represented
 simply by a decreasing exponential function with two or more components. A few
 exceptions are known, in which the dissolution rate increases with time. The most
 important in the context of radiological protection is probably that of <sup>238</sup>Pu dioxide...
May 1, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29695644/comments-on-j-radiol-prot-37-2017-761-779-environmental-monitoring-through-the-use-of-silica-based-tld
#8
Keith Stammers
These comments focus on the thermoluminescence aspect of the paper by Siti Rozaila et al, in particular the poor calibration of the TL dosimeters; not taking account of dark current signal; an incorrect method of measuring the fading factor and an incorrect method of correcting for fading of the TL signal. 
 An opinion is expressed that the paper has not been refereed adequately.
April 26, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29692366/quantities-for-assessing-high-photon-doses-to-the-body-a-calculational-approach
#9
Jonathan S Eakins, Elizabeth A Ainsbury
Tissue reactions are the most clinically significant consequences of high-dose exposures to ionizing radiation. However, currently there is no universally recognized dose quantity that can be used to assess and report generalized risks to individuals following whole body exposures in the high-dose range. In this work, a number of potential dose quantities are presented and discussed, with mathematical modelling techniques employed to compare them and explore when their differences are most or least manifest...
April 25, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29692365/quantities-for-assessing-high-doses-to-the-body-a-short-review-of-the-current-status
#10
Jonathan S Eakins, Elizabeth A Ainsbury
Tissue reactions are the most clinically significant consequences of high-dose exposures to ionizing radiation. However, currently there is no universally recognized or recommended dose quantity that can be used to assess generalized risks to individuals following whole body exposures in the high-dose range. This is particularly problematic in emergency response situations, for example, following external exposures of large numbers of individuals: in attempts to relate the triage dosemeter absorbed dose to the risk to the individual, such that a 'dose' may be reported subsequently to medical professionals, it is necessary first to agree on the quantity to be reported...
April 25, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29676284/the-latest-study-of-japanese-nuclear-workers
#11
Suminori Akiba
.
April 20, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29667600/is-eye-lens-dosimetry-needed-in-nuclear-medicine
#12
Malgorzata Wrzesien, Leszek Krolicki, Lukasz Albiniak, Jerzy Olszewski
INTRODUCTION: The specificity of personnel exposure, which distinguishes nuclear medicine, is associated with the form of the radiation source used, and this often requires performing manual procedures while using radioactive isotopes. The variety of radionuclides and medical procedures, and the yearly increase in the number of patients, as well as the change of the individual dose limit for the lens of the eye from a value of 150 mSv per year to a level of 20 mSv, means that issues of eye lens routine dosimetry become interesting from the radiation protection point of view...
April 18, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29657155/harmonization-of-standards-for-permissible-radionuclide-activity-concentrations-in-foodstuffs-in-the-long-term-after-the-chernobyl-accident
#13
Mikhail I Balonov, Valery Kashparov, Elena Nikolaenko, Volodymyr Berkovsky, Sergey Fesenko
The article critically examines the practice of post-Chernobyl standardization of radionuclide concentrations (mainly 137Cs and 90Sr) in food products in the USSR and the successor countries of Belarus, Russia and Ukraine. Recommendations are given on potential harmonization of these standards of radionuclide concentrations in food products among three countries, taking into account substantial international experience. We propose to reduce the number of product groups for standardization purpose from the current several dozens to three to five groups to optimize radiation control and increase the transparency of the process...
April 16, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29637904/comparison-of-normal-tissue-dose-calculation-methods-for-epidemiological-studies-of-radiotherapy-patients
#14
Matthew Mille, Jae Won Jung, Choonik Lee, Gleb Andrejevich Kuzmin, Choonsik Lee
Radiation dosimetry is an essential input for epidemiological studies of radiotherapy patients aimed at quantifying the dose-response relationship of late-term morbidity and mortality. Individualized organ dose must be estimated for all tissues of interest located in-field, near-field, or out-of-field. Whereas conventional measurement approaches are limited to points in water or anthropomorphic phantoms, computational approaches using patient images or human phantoms offer greater flexibility and can provide more detailed 3-dimensional dose information...
April 11, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29637902/protecting-interventional-radiology-and-cardiology-staff-are-current-designs-of-lead-glasses-and-eye-dosemeters-fit-for-purpose
#15
Colin J Martin
Editorial.
April 11, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29633724/measurement-of-scattered-and-transmitted-x-rays-from-intra-oral-and-panoramic-dental-x-ray-equipment
#16
John Richard Holroyd
To quantify the levels of transmitted radiation arising from the use of intra-oral dental X-ray equipment and scattered radiation arising from the use of both intra-oral and panoramic X-ray equipment.
 
 Methods: Levels of scattered radiation were measured at 1 m from a phantom, using an 1800 cc ion chamber. Transmitted radiation was measured using both:
 i) a phantom and Dose Area Product (DAP) meter,
 ii) a patient and an 1800 cc ion chamber.
 
 Results: For intra-oral radiography the patient study gave a maximum transmission of 1...
April 10, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29633720/use-of-active-personal-dosimeters-in-hospitals-eurados-survey
#17
Olivera Ciraj-Bjelac, Eleftheria Carinou, Filip Vanhavere
Considering that occupational exposure in medicine is a matter of growing concern, active personal dosimeters (APD) are also increasingly used in different fields of application of ionising radiation in medicine. An extensive survey to collect relevant information for the use of APDs in medical imaging applications of ionising radiation was organized by EURADOS (European Radiation Dosimetry Group) Working Group 12. The objective was to collect data about use of APDs and to identify the basic problems in the use of the APDs in hospitals...
April 10, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29623901/summaries-of-articles-in-this-issue
#18
(no author information available yet)
Summaries of the articles in this issue are given in the PDF file.
April 6, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29589590/editorial-protection-of-the-public-following-the-kyshtym-accident-in-1957
#19
Mikhail Balonov
No abstract text is available yet for this article.
March 28, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29589589/chromosome-aberrations-in-workers-occupationally-exposed-to-tritium
#20
E Janet Tawn, Gillian B Curwen, Anthony E Riddell
This paper reports the findings of an historical chromosome analysis for unstable aberrations, undertaken on 34 nuclear workers with monitored exposure to tritium. The mean recorded β-particle dose from tritium was 9.33 mGy (range 0.25-79.71 mGy) and the mean occupational dose from external, mainly γ-ray, irradiation was 1.94 mGy (range 0.00-7.71 mGy). The dicentric frequency of 1.91 ± 0.53 × 10-3 per cell was significantly raised, in comparison with that of 0.61 ± 0.30 × 10-3 per cell for a group of 66 comparable worker controls unexposed to occupational radiation...
March 28, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
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