scholarly journals Risk Assessment of Occupational Exposure of Workers Engaged in Radiation Practice without Monitoring Devices

2019 ◽  
pp. 1-6
Author(s):  
Akinlade Bidemi I. ◽  
Akisanya Daniel F. ◽  
Badmus Biodun S.
Keyword(s):  
Effective Dose ◽  
Radiation Protection ◽  
Annual Effective Dose ◽  
Recommended Dose ◽  
Thermoluminescent Dosimeters ◽  
Ogun State ◽  
Occupational Dose ◽  
Radiation Workers ◽  
Risk Of Cancer ◽  
Monitoring Devices

Objective: This study was carried out to evaluate occupational dose of personnel, engaged in radiation work without wearing monitoring device, at five diagnostic centres in Abeokuta, Ogun State metropolis, namely, Rainbow, New image, Bethel, Akinolugbade and Abiolad.  Materials and Methods: Thermoluminescent dosimeters (TLDs) obtained from Radiation Protection Services, Lagos State University (LASU), Ojo were used for dose measurements. LASU is accredited by the Nigerian Nuclear Regulatory Authority (NNRA) to provide radiation monitoring services. The TLDs were distributed to each of the centre for personnel and area (control and supervised) monitoring. The period of exposure of the TLDs was three months. The exposed TLDs were returned to LASU for processing. The effective dose received by personnel per quarter was extrapolated to annual effective dose to make comparison with the International Commission on Radiation Protection (ICRP) recommended dose limit. The stochastic effect of the measured dose was also estimated.  Results: Annual effective dose received by all personnel ranged from 1.16 - 2.54 mSv. While the highest value was obtained by personnel at Bethel diagnostic centre, the lowest value was obtained at Akinolugbade. The risk of cancer associated with these values, estimated for a million population, was 112 and 61 at Bethel and Akinolugbade respectively. Conclusion: This study showed that the annual effective doses to personnel at these centres were below the ICRP recommended dose of 20 mSv per annum. However, the Managements of these diagnostic centres should provide monitoring devices for their radiation workers in line with NNRA authorization requirements.

scholarly journals Investigating the effective annual dose of radiation angiography department of Afshar Hospital in Yazd and providing radiation protection strategies to better manage the dose received by staff

2020 ◽  
Author(s):  
A Asgari ◽  
AA Parach ◽  
SJ Mirmohammadi ◽  
AH Mehrparvar ◽  
E Daneshian ◽  
...  
Keyword(s):  
Effective Dose ◽  
Radiation Protection ◽  
Work Experience ◽  
Standard Dose ◽  
Annual Dose ◽  
Protection Measures ◽  
Occupational Dose ◽  
Effective Annual Dose ◽  
Protection Strategies ◽  
Radiation Workers

Introduction: Due to the increasing use of angiography procedures and the higher risk of deterministic and stochastic effects for radiation workers of these sections than other radiological procedures, radiation safety is very important among angiography staff. Therefore, this study aimed to obtain the effective dose of angiography staff, compare them with the standard dose limit, and finally outline the strategies for occupational dose reduction in angiography. Methods: In this study, the report of film dosimetry of angiography staff was studied and the effective periodic and annual doses of 34 radiographs were reported from the year 2015 to 2018. The relationship between effective dose and body mass index, work experience, gender and age of staff was also evaluated. Results: The results showed that the average effective dose of the physicians, nurses and radiographers in 2 months period were 0.2 mSv and their average annual effective dose were 1.6, 1.2 and 1.2, respectively. In addition, there were no significant relationship between effective dose and work experience, age, sex and BMI of the radiation workers. Conclusion: The effective dose of radiation in this study is less than the annual dose.. Low effective doses do not make their radiation protection less important because this reduction can be due to radiation protection by personnel in this ward. Therefore, as far as possible, radiation protection measures should be taken to reduce the radiation exposure of catheterization lab staff. In these radiologists thyroid protection, eyes, gonads, and the organs that are usually outside the lead apron is of great importance.

Estimation of annual occupational effective doses from external ionising radiation at medical institutions in Kenya

2011 ◽  
Vol 15 (4) ◽  
pp. 116 ◽  
Author(s):  
Geoffrey K Korir ◽  
Jeska S Wambani ◽  
Ian K. Korir
Keyword(s):  
Effective Dose ◽  
Annual Effective Dose ◽  
Radiation Characteristic ◽  
Thermoluminescent Dosimeters ◽  
Medical Sector ◽  
Medical Institutions ◽  
Radiation Workers ◽  
One Year ◽  
Effects Of Radiation ◽  
Occupational Radiation

This study details the distribution and trends of doses from occupational radiation exposure among radiation workers from participating medical institutions in Kenya, where monthly dose measurements were collected for a period of one year (January to December 2007) using thermoluminescent dosimeters. A total of 367 medical radiation workers were monitored, comprising 27% radiologists, 2% oncologists, 4% dentists, 5% physicists, 45% technologists, 4% nurses, 3% film processor technicians, 4% auxiliary staff, and 5% radiology office staff. The average annual effective dose for all subjects ranged from 1.19 to 2.52 mSv. Among these workers, technologists received the largest annual effective dose. The study forms the initiation stage of wider, comprehensive and more frequent monitoring of occupational radiation exposures and long-term investigations into its accumulation patterns, which could form the basis of future records on the detrimental effects of radiation, characteristic of workers in the medical sector, and other co-factors in a developing country such as Kenya.

scholarly journals Occupational Exposure to Ionizing Radiation in Interventional Cardiology Practices in Bangladesh during 2010-2014

2016 ◽  
Vol 3 (2) ◽  
pp. 63-68
Author(s):  
Mohammad Sohelur Rahman ◽  
Aleya Begum ◽  
Md. Rezaul Karim Khan ◽  
Md. Ashraful Hoque ◽  
M. M. Mahfuz Siraz
Keyword(s):  
Occupational Exposure ◽  
Ionizing Radiation ◽  
Effective Dose ◽  
Radiation Protection ◽  
Annual Effective Dose ◽  
Interventional Cardiology ◽  
Dhaka City ◽  
Thermoluminescent Dosimeters ◽  
Status And Trends ◽  
The Status

Objective: The objective of this study is to assess, analyze and discuss the occupational exposure to ionizing radiation in interventional cardiology practices in Bangladesh for the last 5-year periods. Method: Each year, about 100 workers working in interventional cardiology departments of big hospitals in Dhaka City were monitored using Harshaw Thermoluminescent Dosimeters (TLDs) for quarterly basis. The effective dose of the occupational workers were measured using Two Harshaw TLD Readers (one is manual TLD reader, model-4500, and another is automatic TLD reader, model 6600 plus). Finding: The average annual effective dose (about 80 % workers) in interventional cardiology practices were <2mSv in 2010-2014 and no monitored workers were found to have received an occupational exposure >50 mSv in a single year or >100 mSv in a 5 year period. The status and trends in occupational exposure demonstrate that radiation protection conditions at the majority of the workplace were adequate. Despite that, further optimization is necessary due to large variations observed in the maximum individual doses over the 5-year periods.  

Radiation exposure of the staff at the therapeutic and diagnostic nuclear medicine department

2008 ◽  
Vol 47 (04) ◽  
pp. 175-177 ◽  
Author(s):  
J. Dolezal
Keyword(s):  
Nuclear Medicine ◽  
Radiation Exposure ◽  
Effective Dose ◽  
Radiation Protection ◽  
Annual Effective Dose ◽  
Protection Measures ◽  
Professional Groups ◽  
Personal Dosimetry ◽  
The Mean ◽  
Administered Activity

SummaryAim: To assess a radiation exposure and the quality of radiation protection concerning a nuclear medicine staff at our department as a six-year retrospective study. Therapeutic radionuclides such as 131I, 153Sm, 186Re, 32P, 90Y and diagnostic ones as a 99mTc, 201Tl, 67Ga, 111In were used. Material, method: The effective dose was evaluated in the period of 2001–2006 for nuclear medicine physicians (n = 5), technologists (n = 9) and radiopharmacists (n = 2). A personnel film dosimeter and thermoluminescent ring dosimeter for measuring (1-month periods) the personal dose equivalent Hp(10) and Hp(0,07) were used by nuclear medicine workers. The wearing of dosimeters was obligatory within the framework of a nationwide service for personal dosimetry. The total administered activity of all radionuclides during these six years at our department was 17,779 GBq (99mTc 14 708 GBq, 131I 2490 GBq, others 581 GBq). The administered activity of 99mTc was similar, but the administered activity of 131I in 2006 increased by 200%, as compared with the year 2001. Results: The mean and one standard deviation (SD) of the personal annual effective dose (mSv) for nuclear medicine physicians was 1.9 ± 0.6, 1.8 ± 0.8, 1.2 ± 0.8, 1.4 ± 0.8, 1.3 ± 0.6, 0.8 ± 0.4 and for nuclear medicine technologists was 1.9 ± 0.8, 1.7 ± 1.4, 1.0 ± 1.0, 1.1 ± 1.2, 0.9 ± 0.4 and 0.7 ± 0.2 in 2001, 2002, 2003, 2004, 2005 and 2006, respectively. The mean (n = 2, estimate of SD makes little sense) of the personal annual effective dose (mSv) for radiopharmacists was 3.2, 1.8, 0.6, 1.3, 0.6 and 0.3. Although the administered activity of 131I increased, the mean personal effective dose per year decreased during the six years. Conclusion: In all three professional groups of nuclear medicine workers a decreasing radiation exposure was found, although the administered activity of 131I increased during this six-year period. Our observations suggest successful radiation protection measures at our department.

scholarly journals Radon Activity Concentrations in Natural Hot Spring Water: Dose Assessment and Health Perspective

2021 ◽  
Vol 18 (3) ◽  
pp. 920
Author(s):  
Eka Djatnika Nugraha ◽  
Masahiro Hosoda ◽  
June Mellawati ◽  
Untara Untara ◽  
Ilsa Rosianna ◽  
...  
Keyword(s):  
Public Health ◽  
Effective Dose ◽  
Radiation Protection ◽  
Water Samples ◽  
Hot Springs ◽  
Hot Spring ◽  
Annual Effective Dose ◽  
Spring Water ◽  
Dose Assessment ◽  
West Java

The world community has long used natural hot springs for tourist and medicinal purposes. In Indonesia, the province of West Java, which is naturally surrounded by volcanoes, is the main destination for hot spring tourism. This paper is the first report on radon measurements in tourism natural hot spring water in Indonesia as part of radiation protection for public health. The purpose of this paper is to study the contribution of radon doses from natural hot spring water and thereby facilitate radiation protection for public health. A total of 18 water samples were measured with an electrostatic collection type radon monitor (RAD7, Durridge Co., USA). The concentration of radon in natural hot spring water samples in the West Java region, Indonesia ranges from 0.26 to 31 Bq L−1. An estimate of the annual effective dose in the natural hot spring water area ranges from 0.51 to 0.71 mSv with a mean of 0.60 mSv for workers. Meanwhile, the annual effective dose for the public ranges from 0.10 to 0.14 mSv with an average of 0.12 mSv. This value is within the range of the average committed effective dose from inhalation and terrestrial radiation for the general public, 1.7 mSv annually.

OCCUPATIONAL DOSE AND RADIATION PROTECTION PRACTICE IN UAE: A RETROSPECTIVE CROSS-SECTIONAL COHORT STUDY (2002–2016)

2019 ◽  
Vol 187 (4) ◽  
pp. 426-437 ◽  
Author(s):  
Wiam Elshami ◽  
Mohamed Abuzaid ◽  
Albert D Piersson ◽  
Ola Mira ◽  
Mohamed AbdelHamid ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Radiation Protection ◽  
Annual Effective Dose ◽  
Phase 1 ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Occupational Dose ◽  
Occupational Radiation ◽  
Reduction Of Radiation Dose

Abstract A two-phased retrospective cross-sectional study analysed the occupational dose and radiation protection practice among medical workers in two hospitals in the UAE. Phase 1 evaluated radiation protection practice using a questionnaire, whereas phase 2 assessed the occupational dose. Readings of 952 thermoluminescence dosimeters were analyzed. The result showed 52% of medical workers have a good level of radiation protection practice. Readings of 952 thermoluminescence dosimeters were analyzedAverage annual effective dose per worker ranged from 0.39 to 0.83 mSv. Cardiologists and nurses displayed a higher average of occupational radiation dose compared to other workers. There were no significant correlations between radiation protection practice and hospital, occupation or department. Finally, the occupational dose was within the international and national limits, but the reduction of radiation dose to cardiologist and nurses is essential. Moreover, training is essential to promote radiation safe practice among medical workers.

Occupational Exposure in Radiation Applications in India: Trends and Distribution Analysis

2021 ◽  
Author(s):  
M Senthilkumar ◽  
C Senthil Kumar ◽  
J Koley ◽  
J Velmurugan
Keyword(s):  
Occupational Exposure ◽  
Effective Dose ◽  
Distribution Ratio ◽  
Dose Distribution ◽  
Annual Effective Dose ◽  
Critical Parameters ◽  
Distribution Analysis ◽  
Collective Dose ◽  
Occupational Dose ◽  
Significant Change

Abstract Occupational exposure data in radiation applications provide a good insight on the radiation risks to workers from occupational hazards, the safe practices adopted and in deriving methods to prevent possible radiation exposures. The analysis of occupational exposure may be used to provide regulatory guidance and more focused attention to improve the safety systems, thus improving the personnel and environment safety. In this study, occupational exposure from radiation applications during 2004–18 amounting to a total number of 1951 486 occupational dose data are collected and analysed using the statistical software package, SPSS. As recommended by the United Nations Scientific Committee on the Effects of Atomic Radiation, four critical parameters viz., annual collective effective dose, average annual effective dose, individual dose distribution ratio and the annual collective dose distribution ratio for each practice are estimated. Using the trend observed for these parameters, it is predicted that occupational exposure in diagnostic radiology in the year 2023 would increase by 80% in total number of monitored with 76% increase in average collective dose and no significant change in average annual effective dose. In the same manner, nuclear medicine would see 28% of increase in radiation workers with the increase of 24% in collective dose with no significant change in average annual effective dose. Further, the reasons and area of regulatory focus for the different practices are discussed.

Occupational radiation doses among nurses working in several medical departments in Saudi Arabia: a five-year national study

2021 ◽  
Author(s):  
N. Shubayr ◽  
Y. Alashban
Keyword(s):  
Saudi Arabia ◽  
Effective Dose ◽  
National Study ◽  
Radiation Doses ◽  
Catheterization Laboratory ◽  
Thermoluminescent Dosimeters ◽  
Cardiac Catheterization Laboratory ◽  
Occupational Dose ◽  
Effective Doses ◽  
Occupational Radiation

There has been an increase in the numbers of diagnostic and therapeutic procedures, which, in turn, has increased the occupational radiation doses delivered to healthcare practitioners. The aim of this study is to estimate a baseline for the occupational effective doses for five consecutive years (2016–2020) among nurses working in several medical departments in Saudi Arabia. A total of 3249 nurses were monitored from 2016 to 2020. Occupational effective doses were estimated using thermoluminescent dosimeters (TLD-100 chip) made of lithium fluoride (Li natural) LiF:Mg.Ti materials. An analysis of the dosimetry data revealed that the overall mean annual effective dose (MAED), range of the effective doses and the mean collective effective dose for nurses in selected departments during the study period were 0.85 mSv, 0.06–13.07 mSv and 46.51 man-mSv, respectively. The MAEDs for nurses were obtained from various departments, including the operating room (OR; 0.81 mSv), general X-ray (0.90 mSv), cardiac catheterization laboratory (cath-lab; 0.97 mSv), endoscopy (0.79 mSv), computed tomography (CT; 0.77 mSv), fluoroscopy (0.81 mSv), dentistry (0.92 mSv), angiography (0.91 mSv), nuclear medicine (1.01 mSv), urology (0.68 mSv), radiotherapy (0.67 mSv) and mammography (0.77 mSv). The MAED for cath-lab nurses was significantly higher than that for OR, CT and endoscopy nurses. The occupational doses among nurses in Saudi Arabia were below the recommended dose limit of 20 mSv. However, to further reduce the occupational dose, we recommend training and continuing education in radiation protection for nurses involved in radiological procedures.

scholarly journals Estimation of indoor radiological hazard on worker and public health in atomic energy centre Dhaka campus, Bangladesh

2021 ◽  
Author(s):  
Md. Rafiqul Islam ◽  
Mohammad Sohelur Rahman ◽  
Khondokar Nazmus Sakib ◽  
Md. Mohiuddin Tasnim ◽  
Selina Yeasmin
Keyword(s):  
Public Health ◽  
Cancer Risk ◽  
Effective Dose ◽  
Annual Effective Dose ◽  
Life Time ◽  
Radiation Monitoring ◽  
Atomic Energy ◽  
Radiological Protection ◽  
Radiological Hazard ◽  
Thermoluminescent Dosimeters

Introduction: Radiation gives tremendous benefit to mankind but unnecessary radiation may pose harm to worker and public. The purpose of the study is to continuous indoor radiation monitoring of Atomic Energy Centre Dhaka (AECD) campus to minimize the radiological risk on worker and public health in and around the campus. Materials and methods: Continuous indoor radiation monitoring was conducted in the AECD campus from November 2018-April 2019 using the Thermoluminescent dosimeters. The excess life-time cancer risk on worker and public health were estimated based on the continuous indoor radiation monitoring data. Results: The annual effective doses to the worker and public from indoor radiation were ranged from 0.28±0.11 mSv to 0.67±0.25 mSv and the mean was found to be 0.43±0.10 mSv. The excess life-time cancer risk (ELCR) on the radiation worker & public health were estimated based on the annual effective dose and ranged from 1.13 Χ 10-3 to 2.65 Χ 10-3 with an average of 1.72 Χ 10-3.The average annual effective dose and ELCR on worker and public health were lower than those of the worldwide average values. Conclusion: The radiological hazard on worker and public health in and around the AECD campus is not significant because those values are lower than the recommended values of the international commission on radiological protection. Monitoring of these indoor places would help in keeping a record of safe working practices during the handling of the radioactive substances and radiation generating equipments in a radiological facility.

ASSESSMENT OF ANNUAL EFFECTIVE DOSE FROM EXPOSURE TO NATURAL RADIOACTIVITY SOURCES IN A CASE–CONTROL STUDY IN BIHOR COUNTY, ROMANIA

2018 ◽  
Vol 185 (1) ◽  
pp. 7-16 ◽  
Author(s):  
T Dicu ◽  
B D Burghele ◽  
A Cucoș ◽  
R Mishra ◽  
B K Sapra
Keyword(s):  
Effective Dose ◽  
Annual Effective Dose ◽  
Indoor Radon ◽  
Control Sample ◽  
Track Detector ◽  
Radon Activity ◽  
Thermoluminescent Dosimeters ◽  
Activity Concentrations ◽  
Two Samples ◽  
Significant Difference

Abstract The purpose of the article is to evaluate the annual effective dose for 80 women divided into two samples; one sample located in the former uranium Băiţa-Ştei area, hereinafter referred to as case sample, respectively for a control sample, located in the same county, but exposed in most cases to indoor radon activity concentrations <300 Bq m−3. In this regard, the homemade ‘RaThoGamma’ kit was used, which contained two thermoluminescent dosimeters, a CR-39 track detector (RSKS) for indoor radon activity concentration, two CR-39 track detectors (Radtrak2®/ Radtrak2T®) for radon and thoron activity concentrations as well as Direct Radon Progeny Sensors/Direct Thoron Progeny Sensors for measuring time-averaged radon and thoron progenies concentrations. In addition, a total of 80 water samples were collected in order to evaluate the ingestion dose due to radon and radium activity concentrations in drinking water. The maximum total annual effective dose in the control sample was 14.1 mSv, while in the case sample the maximum annual effective dose was 60.5 mSv. This difference is mainly due to radon progenies inhalation. Other pathways did not show a statistically significant difference between the two samples, showing a minor contribution to the annual effective dose.

Sign in / Sign up

Export Citation Format

Share Document