Retrospective method validation and uncertainty estimation for actinides determination in excreta by alpha spectrometry
Two essential technical requirements of ISO 17025 guide for accreditation of testing and calibration laboratories are the validation of methods and the estimation of all sources of uncertainty that may affect the analytical result. Bioelimination Laboratory from Radiation Dosimetry Service of CIEMAT (Spain) uses alpha spectrometry to quantify alpha emitters (Pu, Am, Th, U and Cm isotopes) in urine and faecal samples from workers exposed to internal radiation. Therefore and as a step previous to achieving the ISO 17025 accreditation, the laboratory has performed retrospective studies based on the obtained results in the pas...
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Hernandez, C., Sierra, I. Tags: Paper Source Type: research
Corrections associated with on-phantom calibrations of neutron personal dosemeters
The response of neutron personal dosemeters as a function of neutron energy and angle of incidence is typically measured by mounting the dosemeters on a slab phantom and exposing them to neutrons from an accelerator-based or radionuclide source. The phantom is placed close to the source (75 cm) so that the effect of scattered neutrons is negligible. It is usual to mount several dosemeters on the phantom together. Because the source is close, the source distance and the neutron incidence angle vary significantly over the phantom face, and each dosemeter may receive a different dose equivalent. This is particularly important...
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Hawkes, N. P., Thomas, D. J., Taylor, G. C. Tags: Paper Source Type: research
The challenge of ciemat internal dosimetry service for accreditation according to iso/iec 17025 standard, for in vivo and in vitro monitoring and dose assessment of internal exposures
The accreditation of an Internal Dosimetry Service (IDS) according to ISO/IEC 17025 Standard is a challenge. The aim of this process is to guarantee the technical competence for the monitoring of radionuclides incorporated in the body and for the evaluation of the associated committed effective dose E(50). This publication describes the main accreditation issues addressed by CIEMAT IDS regarding all the procedures involving good practice in internal dosimetry, focussing in the difficulties to ensure the traceability in the whole process, the appropriate calculation of detection limit of measurement techniques, the validati...
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Lopez, M. A., Martin, R., Hernandez, C., Navarro, J. F., Navarro, T., Perez, B., Sierra, I. Tags: Paper Source Type: research
2240 irradiated personal dosemeters for the ic2014 eurados intercomparison at seibersdorf
The Dosimetry Laboratory Seibersdorf was the irradiation laboratory for the IC2014 EURADOS intercomparison for individual monitoring. One hundred and twelve whole-body dosimetry systems with 30 dosemeters per dosimetry system participated in the intercomparison. In total, 2240 personal dosemeters were irradiated in photon reference radiation fields on the ISO water slab phantom in terms of personal dose equivalent Hp(10) and Hp(0.07). Two nuclide irradiation systems (137Cs and 60Co gamma radiation) and a 320-kV X-ray radiation unit were used. The irradiation plan consisted of nine irradiation set-ups with five different IS...
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Hranitzky, C. Tags: Paper Source Type: research
First eurados intercomparison exercise of eye lens dosemeters for medical applications
In the context of the decrease in the eye lens dose limit for occupational exposure to 20 mSv per year stated by the recent revision of the European Basic Safety Standards Directive 2013/59/EURATOM, the European Radiation Dosimetry Group (EURADOS) has organised in 2014, for the first time, an intercomparison exercise for eye lens dosemeters. The main objective was to assess the capabilities of the passive eye lens dosemeters currently in use in Europe for occupational monitoring in medical fields. A total of 20 European individual monitoring services from 15 different countries have participated. The dosemeters provided by...
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Clairand, I., Ginjaume, M., Vanhavere, F., Carinou, E., Daures, J., Denoziere, M., Silva, E. H., Roig, M., Principi, S., Van Rycheghem, L. Tags: Paper Source Type: research
Eurados-ideas guidelines (version 2) for the estimation of committed doses from incorporation monitoring data
Dose assessment after intakes of radionuclides requires application of biokinetic and dosimetric models and assumptions about factors influencing the final result. In 2006, a document giving guidance for such assessment was published, commonly referred to as the IDEAS Guidelines. Following its publication, a working group within the European networks CONRAD and EURADOS was established to improve and update the IDEAS Guidelines. This work resulted in Version 2 of the IDEAS Guidelines, which was published in 2013 in the form of a EURADOS report. The general structure of the original document was maintained; however, new proc...
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Castellani, C. M., Marsh, J. W., Hurtgen, C., Blanchardon, E., Berard, P., Giussani, A., Lopez, M. A. Tags: Paper Source Type: research
Evolution of the iec and en standards for individual monitoring of ionising radiation
This article presents the evolution of the International Electrotechnical Commission (IEC) and the European standards for individual monitoring of ionising radiation issued, respectively, from the committees IEC/Sub Committee 45B and European Committee for Electro-technical Standardization/Technical Committee 45B ‘Radiation protection instrumentation’. Standards for passive individual photon and beta dosimetry systems as well as those for active individual monitors are discussed. A neutron ambient dose equivalent (rate) meter standard and a technical report concerning the determination of uncertainty in measure...
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Voytchev, M., Behrens, R., Ambrosi, P., Radev, R., Chiaro, P. Tags: Paper Source Type: research
Technical recommendations for monitoring individuals for occupational intakes of radionuclides
The TECHREC project, funded by the European Commission, will provide Technical Recommendations for Monitoring Individuals for Occupational Intakes of Radionuclides. It is expected that the document will be published by the European Commission as a report in its Radiation Protection Series during 2016. The project is coordinated by the European Radiation Dosimetry Group (EURADOS) and is being carried out by members of EURADOS Working Group 7 (Internal Dosimetry). This paper describes the aims and purpose of the Technical Recommendations, and explains how the project is organised. (Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Etherington, G., Berard, P., Blanchardon, E., Breustedt, B., Castellani, C. M., Challeton-de Vathaire, C., Giussani, A., Franck, D., Lopez, M. A., Marsh, J. W., Nosske, D. Tags: Paper Source Type: research
A short history and critical review of individual monitoring
Soon after the discovery of X-rays and the radioactive element radium harmful radiation effects occurred, mainly in the medical field. Consequently, the radiologists, a new profession at that time, called for a limitation of radiation exposures. First proposals were to limit the exposure rate to prevent the incidence of skin erythema. It took more than two decades and there were many victims of severe radiation effects until a sound basis for radiation protection and individual monitoring was established. For external dosimetry, the film dosemeter was invented in the 1920s. This device, often combined with an ion chamber-b...
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Wernli, C. Tags: Paper Source Type: research
International conference on individual monitoring of ionising radiation
(Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - September 7, 2016 Category: Radiology Authors: Vanhavere, F., On behalf of the Organising Committee Tags: Editorial Source Type: research
OPTIMISATION IN X-RAY AND MOLECULAR IMAGING 2015 - THE 4th MALMö CONFERENCE ON MEDICAL IMAGING: List of participants
(Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - June 6, 2016 Category: Radiology Tags: List of Participants Source Type: research
Silicon photomultipliers for medical imaging and dosimetry--an overview
This article gives an overview of SiPMs for medical imaging and dosimetry. In addition, a learning and training program targeted to graduate students is described. (Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - June 6, 2016 Category: Radiology Authors: Herrnsdorf, L., Caccia, M., Mattsson, S. Tags: Paper Source Type: research
Optimisation of occupational radiation protection in image-guided interventions: exploring video recordings as a tool in the process
In conclusion, the use of video recordings is a promising tool to identify dose-affecting instances, allowing for a deeper knowledge of the interdependency between the management of the medical procedure, the applied imaging technology and the occupational exposure level. However, for a full information about the dose-affecting actions, the equipment used and the recording settings have to be thoroughly planned. (Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - June 6, 2016 Category: Radiology Authors: Almen, A., Sandblom, V., Rystedt, H., von Wrangel, A., Ivarsson, J., Bath, M., Lundh, C. Tags: Paper Source Type: research
Basic radiation protection education and training for medical professionals; georgian experience and future perspective
The level of knowledge provided by the Tbilisi State Medical University (TSMU) standard curriculum modules in ‘Medical physics’ and ‘Radiation risk estimates’ was assessed as was the learning outcome of modern standards elective course in ‘Radiation protection’. Two groups of medical students were examined: Group 1: 5 y students, participants in elective course ‘Radiobiology and radiogenic health risk’ and Group 2: 1–2 y students, participants in winter and summer schools. Students were tested before and after training courses with the same tests questionnaire. The resu...
Source: Radiation Protection Dosimetry - June 6, 2016 Category: Radiology Authors: Todua, F., Nadareishvili, D., Ormotsadze, G., Sanikidze, T. Tags: Paper Source Type: research
The application of improved, structured and interactive group learning methods in diagnostic radiology
This study provides an example on how it is possible to design environments in a diagnostic radiology department that could meet learning demands implied by the introduction of new imaging technologies. The innovative aspect of the design does not result from the implementation of any specific tool for learning. Instead, advancement is achieved by a novel set-up of existing technologies and an interactive format that allows for focussed discussions between learners with different levels of expertise. Consequently, the study points to what is seen as the underexplored possibilities of tailoring basic and specialist training...
Source: Radiation Protection Dosimetry - June 6, 2016 Category: Radiology Authors: Ivarsson, J., Rystedt, H., Asplund, S., Johnsson, A. A., Bath, M. Tags: Paper Source Type: research
