Flexible, wireless, inductively coupled surface coil resonator for epr tooth dosimetry
Managing radiation injuries following a catastrophic event where large numbers of people may have been exposed to life-threatening doses of ionizing radiation relies on the availability of biodosimetry to assess whether individuals need to be triaged for care. Electron Paramagnetic Resonance (EPR) tooth dosimetry is a viable method to accurately estimate the amount of ionizing radiation to which an individual has been exposed. In the intended measurement conditions and scenario, it is essential that the measurement process be fast, straightforward and provides meaningful and accurate dose estimations for individuals in the...
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Authors: Schreiber, W., Petryakov, S. V., Kmiec, M. M., Feldman, M. A., Meaney, P. M., Wood, V. A., Boyle, H. K., Flood, A. B., Williams, B. B., Swartz, H. M. Tags: Paper Source Type: research
L Band EPR Tooth Dosimetry for Heavy Ion Irradiation
Electron Paramagnetic Resonance (EPR) tooth dosimetry is being developed as a device to rapidly assess large populations that were potentially exposed to radiation during a major radiation accident or terrorist event. While most exposures are likely to be due to fallout and therefore involve low linear energy transfer (LET) radiation, there is also a potential for exposures to high LET radiation, for which the effect on teeth has been less well characterized by EPR. Therefore, the aim of this paper is to acquire fundamental response curves for high LET radiation in tooth dosimetry using L band EPR. For this purpose, we exp...
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Authors: Yamaguchi, I., Sato, H., Kawamura, H., Hamano, T., Yoshii, H., Suda, M., Miyake, M., Kunugita, N. Tags: Paper Source Type: research
Advances in in vivo EPR Tooth BIOdosimetry: Meeting the targets for initial triage following a large-scale radiation event
Several important recent advances in the development and evolution of in vivo Tooth Biodosimetry using Electron Paramagnetic Resonance (EPR) allow its performance to meet or exceed the U.S. targeted requirements for accuracy and ease of operation and throughput in a large-scale radiation event. Ergonomically based changes to the magnet, coupled with the development of rotation of the magnet and advanced software to automate collection of data, have made it easier and faster to make a measurement. From start to finish, measurements require a total elapsed time of 5 min, with data acquisition taking place in less than 3 min....
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Authors: Flood, A. B., Williams, B. B., Schreiber, W., Du, G., Wood, V. A., Kmiec, M. M., Petryakov, S. V., Demidenko, E., Swartz, H. M., the EPR Center Tooth Dosimetry Project Team Tags: Paper Source Type: research
U.S. Department of Defense Multiple-Parameter Biodosimetry Network
The U.S. Department of Defense (USDOD) service members are at risk of exposure to ionizing radiation due to radiation accidents, terrorist attacks and national defense activities. The use of biodosimetry is a standard of care for the triage and treatment of radiation injuries. Resources and procedures need to be established to implement a multiple-parameter biodosimetry system coupled with expert medial guidance to provide an integrated radiation diagnostic system to meet USDOD requirements. Current USDOD biodosimetry capabilities were identified and recommendations to fill the identified gaps are provided. A USDOD Multi-p...
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Authors: Blakely, W. F., Romanyukha, A., Hayes, S. M., Reyes, R. A., Stewart, H. M., Hoefer, M. H., Williams, A., Sharp, T., Huff, L. A. Tags: Paper Source Type: research
An update of the WHO Biodosenet: Developments since its Inception
In 2007 the World Health Organization established an international network of biodosimetry laboratories, the BioDoseNet. The goal of this network was to support international cooperation and capacity building in the area of biodosimetry around the world, including harmonisation of protocols and techniques to enable them to provide mutual assistance during a mass casualty event. In order to assess the progress and success of this network, the results of the second survey conducted in 2015 that assessed the capabilities and capacities of the members of the network, were compared to the similar first survey conducted in 2009....
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Authors: Wilkins, R. C., Carr, Z., Lloyd, D. C. Tags: Paper Source Type: research
Biodosimetry: Medicine, Science, and Systems to Support the Medical Decision-Maker Following a Large Scale Nuclear or Radiation Incident
The public health and medical response to a radiological or nuclear incident requires the capability to sort, assess, treat, triage and to ultimately discharge, refer or transport people to their next step in medical care. The size of the incident and scarcity of resources at the location of each medical decision point will determine how patients are triaged and treated. This will be a rapidly evolving situation impacting medical responders at regional, national and international levels. As capabilities, diagnostics and medical countermeasures improve, a dynamic system-based approach is needed to plan for and manage the in...
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Authors: Coleman, C. N., Koerner, J. F. Tags: Paper Source Type: research
Contribution of Harold M. Swartz to In Vivo EPR and EPR Dosimetry
In 2015, we are celebrating half a century of research in the application of Electron Paramagnetic Resonance (EPR) as a biodosimetry tool to evaluate the dose received by irradiated people. During the EPR Biodose 2015 meeting, a special session was organized to acknowledge the pioneering contribution of Harold M. (Hal) Swartz in the field. The article summarizes his main contribution in physiology and medicine. Four emerging themes have been pursued continuously along his career since its beginning: (1) radiation biology; (2) oxygen and oxidation; (3) measuring physiology in vivo; and (4) application of these measurements ...
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Authors: Gallez, B. Tags: Paper Source Type: research
Using Stable Free Radicals to Obtain Unique and Clinically Useful Data In Vivo in Human Subjects
This paper attempts to: (1) provide a critical overview of the challenges and opportunities to extend electron paramagnetic resonance (EPR) into practical applications in human subjects, based on EPR measurements made in vivo; (2) summarize the clinical applications of EPR for improving treatments in cancer, wound healing and diabetic care, emphasizing EPR's unique capability to measure tissue oxygen repeatedly and with particular sensitivity to hypoxia and (3) summarize the capabilities of in vivo EPR to measure radiation dose for triage and medical guidance after a large-scale radiation exposure. The conclusion is that w...
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Authors: Swartz, H. M. Tags: Paper Source Type: research
Introduction to the special issue of Radiation Protection Dosimetry
(Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - December 22, 2016 Category: Radiology Tags: Paper Source Type: research
Strange Glow: The Story of Radiation
(Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - December 6, 2016 Category: Radiology Authors: Alexakhin, R. M. Tags: Review article Source Type: research
IAEA Tec Doc-1731 'Implications for Occupational Radiation Protection of the New Dose Limit for the Lens of the Eye
(Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - December 6, 2016 Category: Radiology Authors: Carinou, E. Tags: Book review Source Type: research
A dose calculation model application for indoor exposure to two-layer walls gamma irradiation: the case study of ceramic tiles
A calculation model for determining the indoor dose due to building materials with significant concentration of radioactivity has been applied to the case study of ceramic tiles; the model allows the contribution of bearing walls and wall covering materials to be calculated. The model is implemented in FORTRAN 77 and provides a quantification of the gamma radiation field (in terms of external dose rate in air, nGyh–1) inside a room with known dimensions. Application model results have been validated both by comparison with the results obtained by other authors and by experimental measurements. Model sensitivity and p...
Source: Radiation Protection Dosimetry - December 6, 2016 Category: Radiology Authors: Righi, S., Verita, S., Rossi, P. L., Maduar, M. F. Tags: Paper Source Type: research
Comprehensive data concerning cosmic radiation doses at ground level and in-flights for turkey
Cosmic radiation doses of individuals living in 81 cities in Turkey were estimated by using CARI-6 software. Annual cosmic radiation doses of individuals were found to be between 308 and 736 µSv y–1 at ground level. The population-weighted annual effective dose from cosmic radiation was determined to be 387 µSv y–1 for Turkey. Cosmic radiation doses on-board for 137 (60 domestic and 77 international) flights varied from 1.2 to 83 µSv. It was estimated that six or over long-route round-trip air travels may cause cosmic radiation dose above the permissible limit for member of the public, i.e. 1 ...
Source: Radiation Protection Dosimetry - December 6, 2016 Category: Radiology Authors: Parmaksız, A. Tags: Paper Source Type: research
Evaluation of the release criteria from hospital of thyroid carcinoma patient treated with 131i
Patients treated with high doses of 131I for thyroid cancer are generally hospitalised under isolation conditions for up to several days after treatment. The external dose rates from 192 randomised samples of thyroid carcinoma patients were measured at 1 m after 48 h of radioiodine dose administration. The results showed that 12 % of released patients had an external dose rate of >30 µSv h–1 (the release criterion set by the national regulations) whereas 42 % of them had an external dose rates between 11 and 20 µSv h–1. Ninety-two per cent of the patients were released after 48 h. The patient soc...
Source: Radiation Protection Dosimetry - December 6, 2016 Category: Radiology Authors: Lahfi, Y., Anjak, O. Tags: Paper Source Type: research
An evaluation of the basic characteristics of a plastic scintillating fibre detector in ct radiation fields
The ionisation chamber for computed tomography (CT) is an instrument that is most commonly used to measure the computed tomography dose index. However, it has been reported that the 10 cm effective detection length of the ionisation chamber is insufficient due to the extent of the dose distribution outside the chamber. The purpose of this study was to estimate the basic characteristics of a plastic scintillating fibre (PSF) detector with a long detection length of 50 cm in CT radiation fields. The authors investigated position dependence using diagnostic X-ray equipment and dependencies for energy, dose rate and slice thic...
Source: Radiation Protection Dosimetry - December 6, 2016 Category: Radiology Authors: Terasaki, K., Fujibuchi, T., Toyoda, T., Yoshida, Y., Akasaka, T., Nohtomi, A., Morishita, J. Tags: Paper Source Type: research
