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Journals Radiation and Environmental Bi...

Radiation and Environmental Biophysics

https://read.qxmd.com/read/38413426/the-european-intercomparison-of-in-vivo-monitoring-laboratories-the-eivic-2020-project
#1
JOURNAL ARTICLE
D Franck, O Meisenberg, T Beaumont, W Buchholz, M A López, J F Navarro, B Pérez, K Hürkamp, B Breustedt, F Vanhavere
The EIVIC project was launched in 2020, and the main goal was the organisation of a European intercomparison of in-vivo monitoring laboratories dealing with direct measurements of gamma-emitting radionuclides incorporated into the body of exposed workers. This project was organised jointly by members of EURADOS Working Group 7 on internal dosimetry (WG7), the Federal Office for Radiation Protection (BfS, Germany) and the Radioprotection and Nuclear Safety Institute (IRSN, France). The objective was to assess the implementation of individual-monitoring requirements in EU Member States on the basis of in-vivo measurements and to gain insight into the performance of in-vivo measurements using whole-body counters...
February 27, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38411924/-210-po-and-210-pb-radioactivity-levels-in-local-and-imported-tobacco-used-in-palestine-and-jordan
#2
JOURNAL ARTICLE
Lilia A Mashal, Fida M Buss, Khalil M Thabayneh
This study aimed to assess the concentrations of 210 Po and 210 Pb in various tobacco samples from Palestine and Jordan. Cigarette smoking is recognized as a significant contributor to the radiation dose received by individuals, primarily due to the elevated levels of 210 Pb and 210 Po found in tobacco. The analysis revealed that the average concentrations of 210 Po in locally sourced tobacco and cigarette samples in Palestine are 16.8 ± 2.3 mBq/g and 18.5 ± 2.0 mBq/g, with a total average of 17...
February 27, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38376815/minimum-reporting-standards-about-dosimetry-of-radiation-sources-used-in-radiation-research-studies
#3
EDITORIAL
Andrzej Wojcik, Isabelle Thierry-Chef, Anna A Friedl, Werner Rühm
The necessity of precise dosimetry and its documentation in research is less obvious than in medicine and in radiological protection. However, in radiation research, results can only be validated if experiments were carried out with sufficient precision and described with sufficient details, especially information regarding dosimetry. In order to ensure this, an initiative was launched to establish reproducible dosimetry reporting parameters in published studies. Minimum standards for reporting radiation dosimetry information were developed and published in parallel in the International Journal of Radiation Biology and Radiation Research...
February 20, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38367061/putting-radioactive-materials-on-the-sustainability-agenda-a-report-from-a-workshop-on-the-sustainability-of-human-made-radioactive-materials-held-at-the-safend-research-symposium-2023
#4
LETTER
Fanny Böse, Alexander Wimmers, Julia Neugebauer, Theresa Lösel, Timo Hermes, Jasmin Beppler, Marie-Sophie Nickel, Pauline Morawe, Maximilian Weber, Christian von Hirschhausen
This report summarizes the findings of a workshop held at the safeND Research Symposium and hosted by the German Federal Office for the Safety of Radioactive Waste Management (BASE) in Berlin in September 2023. The workshop aimed to channel perspectives from various fields of expertise to discuss key sustainability concepts in terms of radioactive waste management. Therefore, the report highlights that current sustainability concepts, such as the United Nations' Sustainable Development Goals (SDG) as well as the concept of Planetary Boundaries, neglect challenges arising from the production and storage of human-made radioactive materials...
February 17, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38310599/influence-of-neutron-cross-section-resonances-on-organ-tissue-equivalent-and-effective-dose-coefficients-for-the-icrp-voxel-phantoms
#5
JOURNAL ARTICLE
Mauritius M Hiller, Ken G Veinot, Nolan E Hertel
The materials which compose the ICRP Voxel phantoms used in the computation of conversion coefficients involve neutron interaction cross-sections that have resonances at specific energies. Depending on the energy bin structure used in the computations, these cross-section resonances may occur at energies that fall between energies at which dose coefficients are computed, thus their effects may not be completely accounted for in the reported coefficients. In the present study, a highly refined energy grid that closely follows the resonance structure in the phantom material cross-sections was identified and used to calculate dose coefficients...
February 4, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38300284/evaluation-of-conventional-imrt-and-vmat-strategies-for-postmastectomy-radiation-therapy-after-immediate-implant-based-reconstruction-using-the-new-estro-acrop-contouring-guidelines
#6
JOURNAL ARTICLE
Andreyson S Araujo, Rogério M V Silva, Divanizia N Souza
This study evaluated the usability of conventional templates based on the new contour guidelines of the European Society of Radiation and Oncology and Advisory Committee in Radiation Oncology Practice (ESTRO-ACROP) for treatment plans of postmastectomy radiotherapy after immediate implant-based reconstruction. Intensity-modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) plans generated with two different treatment planning systems (TPSs, Eclipse and Monaco) were examined. Six computed tomography scans of patients aged 35-54 years were retrospectively analysed who had undergone mastectomy and breast reconstruction using silicone implants after being diagnosed with left breast cancer...
February 1, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38217567/forty-eight-year-follow-up-of-a-female-worker-exposed-to-highly-enriched-uranium-via-chronic-and-acute-inhalation
#7
JOURNAL ARTICLE
Maia Avtandilashvili, Sergey Y Tolmachev
The United States Transuranium and Uranium Registries (USTUR) is a unique resource of data and materials for studying biokinetics of uranium in the human body. In this study, bioassay data and post-mortem organ activities from a female whole-body USTUR donor who was exposed to highly enriched uranium were analyzed using the IMBA Professional Plus® software to derive the best estimate of the total intake. The resulting radiation doses delivered to this individual's whole body and major target organs were calculated from estimated intake based on case-specific dose coefficients derived using the AIDE® software...
January 13, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38212569/risk-of-central-nervous-system-tumour-incidence-in-a-cohort-of-workers-chronically-exposed-to-ionising-radiation
#8
JOURNAL ARTICLE
Maria B Moseeva, Tamara V Azizova, Maria V Bannikova
The aim of the present study was to assess the risk of primary central nervous system (CNS) tumour incidence in a cohort of 22,377 Mayak Production Association workers chronically exposed to ionising radiation. There were 96 primary CNS tumours, including 42 cases of glioma and 44 cases of meningioma, registered during the whole follow-up period (1948-2018). The study demonstrated that the risk of primary CNS tumour incidence was associated with sex, attained age, calendar period, tall body height, age at the beginning of exposure, and facility type...
January 11, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38197922/internal-dose-rate-due-to-intake-of-uranium-and-thorium-by-fish-from-a-dam-reservoir-associated-with-a-uranium-mine-in-brazil
#9
JOURNAL ARTICLE
Wagner de Souza Pereira, Alphonse Kelecom, José Marques Lopes, Maxime Charles-Pierre, Alessander Sá do Carmo, Alexandre Kuster Paiva, Samuel Queiros Pelegrinelli, Wilson Seraine Silva Filho, Lucas Faria Silva, Ademir Xavier da Silva
Uranium mining can cause environmental impacts on non-human biota around mine sites. Because of this, the reduction in non-human biota exposure becomes an important issue. Environmental radioprotection results from the evolution of human radioprotection; it is based on dose rate to non-human biota and uses, as a biological target, and has harmful effects on populations. In the present study, a flooded impoundment created following dam construction in a uranium mine plant undergoing decommissioning was investigated...
January 10, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38197921/long-term-retention-and-distribution-of-highly-enriched-uranium-in-an-occupationally-exposed-female
#10
JOURNAL ARTICLE
Sergey Y Tolmachev, Maia Avtandilashvili
The United States Transuranium and Uranium Registries' (USTUR) female whole body tissue donor studied here was occupationally exposed to highly enriched uranium for 17 years. One hundred and twenty-nine tissue samples were collected at the time of death, 31 years post-exposure. These samples were radiochemically analyzed for uranium. The highest uranium concentration of 16.5 ± 2.0 µg kg-1 was measured in the lungs, and the lowest concentration of 0.11 ± 0...
January 10, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38194100/dosimetric-and-radiobiological-comparison-of-imrt-vmat-and-helical-tomotherapy-planning-techniques-in-hippocampal-sparing-whole-brain-radiotherapy-with-simultaneous-integrated-boost-for-multiple-brain-metastases
#11
JOURNAL ARTICLE
S Balasubramanian, M K Shobana, D Anabalagan, P Thanasekar, S Joel, Prekshi Chaudhary
To compare treatment planning and dosimetric outcomes for hippocampal sparing whole brain radiotherapy (WBRT) with the simultaneous integrated boost (SIB) in brain metastasis (BM) patients using tumour control probability (TCP) and normal tissue complication probability (NTCP) formalism between IMRT, VMAT, and HT techniques. In this retrospective study, the treatment data of 20 BM patients who typically received whole brain radiation with SIB treatment were used. Prescription doses of 30 Gy and 36 Gy was delivered in 10 fractions for WBRT and SIB, respectively...
January 9, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38185693/evaluation-of-organ-dose-using-size-specific-dose-estimation-ssde-and-related-cancer-risk-due-to-chest-ct-scan-during-the-covid-19-pandemic
#12
JOURNAL ARTICLE
Mostafa Robatjazi, Mahdis Moayed, Hamid Reza Baghani, Mikaeil Molazadeh, Nematullah Shomoossi
This study aimed to estimate lung and breast doses for individual patients using the size-specific dose estimate (SSDE) method, as well as calculating effective doses, in patients who underwent chest CT scans during the COVID-19 pandemic. Cancer risk incidence was estimated using excess relative risk (ERR), excess absolute risk (EAR), and lifetime attributable risk (LAR) models from the Biological Effects of Ionizing Radiation Report VII (BEIR-VII). Data from about 570 patients who underwent CT scans for COVID-19 screening were utilized for this study...
January 7, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38182962/comparison-of-cbct-radiation-doses-with-conventional-radiographs-in-tmj-imaging-using-monte-carlo-simulations
#13
JOURNAL ARTICLE
Yeşim Deniz, Hakan Eren, Rüya Sessiz, Gamze Coşan Ata
Three-dimensional imaging methods are widely used for evaluation of bony changes of temporomandibular joint (TMJ). Besides, lateral and posterio-anterior TMJ projections in both closed- and open-jaw positions for each temporomandibular joint are used as two-dimensional diagnostic tools. The purpose of the present study was to compare effective and mean organ absorbed doses of plain radiography techniques with those of different modalities of cone beam computed tomography (CBCT) scanning of an adult's temporomandibular joint...
January 5, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38172372/lifetime-excess-absolute-risk-for-lung-cancer-due-to-exposure-to-radon-results-of-the-pooled-uranium-miners-cohort-study-puma
#14
JOURNAL ARTICLE
M Kreuzer, M Sommer, V Deffner, S Bertke, P A Demers, K Kelly-Reif, D Laurier, E Rage, D B Richardson, J M Samet, M K Schubauer-Berigan, L Tomasek, C Wiggins, L B Zablotska, N Fenske
The Pooled Uranium Miners Analysis (PUMA) study is the largest uranium miners cohort with 119,709 miners, 4.3 million person-years at risk and 7754 lung cancer deaths. Excess relative rate (ERR) estimates for lung cancer mortality per unit of cumulative exposure to radon progeny in working level months (WLM) based on the PUMA study have been reported. The ERR/WLM was modified by attained age, time since exposure or age at exposure, and exposure rate. This pattern was found for the full PUMA cohort and the 1960 + sub-cohort, i...
January 3, 2024: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38078988/a-comparative-dose-escalation-analysis-for-reirradiated-cancer-patients-with-and-without-appropriate-dose-mapping
#15
JOURNAL ARTICLE
Biplab Sarkar, Subhra Snigdha Biswal, Tanweer Shahid, Karthik Appunu, Jibak Bhattacharya, Tharmarnadar Ganesh, Anusheel Munshi, Anindita Das
This study aims to compare dose escalation between two groups of reirradiated cancer patients, one with the previous contour and radiotherapy plan available on the treatment planning system and the other without. First group is identified as DICOM-group, while the other one is called non-DICOM group. The current study included 89 patients, 57 in the DICOM, and 32 in the non-DICOM group, who received reirradiation for recurrent or second primary tumours between 2019 and 2021. For the DICOM group, doses to 0...
December 11, 2023: Radiation and Environmental Biophysics
https://read.qxmd.com/read/38055043/the-activity-of-210-pb-in-cigarette-smoked-in-kazakhstan
#16
JOURNAL ARTICLE
Yuliya Zaripova, Vyacheslav Dyachkov, Mirgul Bigeldiyeva, Alexandr Yushkov
The radon decay product 210 Pb is a known component of tobacco. In this study, the activity concentration of 210 Pb in the most popular cigarette brands (six samples) for Kazakhstan consumers was determined by beta spectrometry. The activity levels of 210 Pb ranged between 2.69 ± 0.27 and 27.42 ± 2.74 mBq per cigarette. Higher activity concentrations for 210 Pb were found in Sample No.4 and showed an excess of the world average by 1.8 times. The average activity concentrations of 210 Pb in cigarette tobacco were 10...
December 6, 2023: Radiation and Environmental Biophysics
https://read.qxmd.com/read/37897500/immune-status-of-people-living-in-the-tande-tande-sub-village-indonesia-an-area-with-high-indoor-radon-concentration
#17
JOURNAL ARTICLE
Sofiati Purnami, Dwi Ramadhani, Tiara Andalya Oktariyani, Viria Agesti Suvifan, Devita Tetriana, Irawan Sugoro, Nastiti Rahajeng, Septelia Inawati Wanandi, Heri Wibowo, Masaru Yamaguchi, Ikuo Kashiwakura, Mukh Syaifudin, Retno Widowati
On Earth, there are significant variations in terms of exposure to naturally occurring radiation among different areas. Radon, a naturally-occurring radioactive gas that is the primary cause of lung cancer in nonsmokers and the second most prevalent cause among smokers, poses a considerable risk. Indoor radon, in particular, constitutes the most substantial source of natural radiation to which individuals are exposed. This study assessed the immune status of a population chronically exposed to high indoor radon concentration in Indonesia...
October 28, 2023: Radiation and Environmental Biophysics
https://read.qxmd.com/read/37831188/modelling-dtpa-therapy-following-am-contamination-in-rats
#18
JOURNAL ARTICLE
Manuel Kastl, Olivier Grémy, Stephanie Lamart, Augusto Giussani, Wei Bo Li, Christoph Hoeschen
A major challenge in modelling the decorporation of actinides (An), such as americium (Am), with DTPA (diethylenetriaminepentaacetic acid) is the fact that standard biokinetic models become inadequate for assessing radionuclide intake and estimating the resulting dose, as DTPA perturbs the regular biokinetics of the radionuclide. At present, most attempts existing in the literature are empirical and developed mainly for the interpretation of one or a limited number of specific incorporation cases. Recently, several approaches have been presented with the aim of developing a generic model, one of which reported the unperturbed biokinetics of plutonium (Pu), the chelation process and the behaviour of the chelated compound An-DTPA with a single model structure...
October 13, 2023: Radiation and Environmental Biophysics
https://read.qxmd.com/read/37794305/behavioral-performance-and-microglial-status-in-mice-after-moderate-dose-of-proton-irradiation
#19
JOURNAL ARTICLE
S S Sorokina, A E Malkov, O M Rozanova, E N Smirnova, A E Shemyakov
Cognitive impairment is a remote effect of gamma radiation treatment of malignancies. The major part of the studies on the effect of proton irradiation (a promising alternative in the treatment of radio-resistant tumors and tumors located close to critical organs) on the cognitive abilities of laboratory animals and their relation to morphological changes in the brain is rather contradictory. The aim of this study was to investigate cognitive functions and the dynamics of changes in morphological parameters of hippocampal microglial cells after 7...
October 4, 2023: Radiation and Environmental Biophysics
https://read.qxmd.com/read/37792108/fractal-analysis-of-the-mandible-cortical-bone-correlation-among-fractal-dimension-values-obtained-by-two-processing-methods-from-periapical-radiograph-and-micro-computed-tomography-with-cone-beam-computed-tomography
#20
JOURNAL ARTICLE
Adriano de Oliveira Loures, Matheus de Abreu, Karina Lopes Devito, Eric Flavio Grisolia-Seifert, Katharina Jähn-Rickert, Gustavo Davi Rabelo
The objectives of the present study were to assess Fractal Dimension (FD) values in the mandible cortical bone obtained from digital periapical radiographs (DPR), high-resolution microtomography (µCT), and cone-beam computed tomography (CBCT), by two processing methods: binarization (FD.b) and grayscale-based method (FD.f) and, finally, to identify the correlation among these values with other micro-architectural parameters. For this, a prospective study was conducted on 18 healthy individuals (mean age 23 ± 2...
October 4, 2023: Radiation and Environmental Biophysics
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