RADIATION RISK ESTIMATION FROM OCCUPATIONAL MEDICAL IMAGING EXPOSURE IN MALAYSIA

2015 ◽  
Vol 75 (6) ◽  
Author(s):  
S.R. Yahaya ◽  
Mimi H. Hassim
Keyword(s):  
Occupational Exposure ◽  
Ionizing Radiation ◽  
Radiation Exposure ◽  
Radiation Protection ◽  
Radiation Safety ◽  
Radiation Risk ◽  
Occupational Radiation Exposure ◽  
Medical Radiation ◽  
Radiation Workers ◽  
Occupational Radiation

Ionizing radiation has been increasingly applied in medicine and firmly established as an essential tool for diagnosis. There is high possibility for medical radiation workers to receive doses that are considerably higher than recorded by their dosimeters due to lack of knowledge about ionizing radiation, lack of training in radiation protection, and attitude of the workers themselves toward radiation protection. The purpose of this study is to estimate the radiation risk due to occupational exposure to ionizing radiation among medical diagnostic workers at hospitals in Malaysia. Also the objective is to determine the knowledge of occupational radiation exposure and radiation safety among the workers.  The assessment was made based on the collective doses collected from film badge of the workers. The results of risk assessment show the mean annual collective effective dose based on type of X-ray procedure in this study was 5.445mSv, which is much lower compared to the whole body exposure dose limit, set by the ICRP Publication 60. A survey on knowledge of occupational radiation exposure and radiation safety was conducted using questionnaire and it was found that vast majority of respondents were aware of radiation safety with 91.3% answered the specific questions regarding radiation protection at workplace correctly. Unfortunately only 30.4% of the respondents fully understand the hazard they are exposed to. The study reveals that there is a critical need to educate not only medical radiation workers but also medical doctors and nurses to decrease unnecessary occupational exposure to radiation hazard.

Occupational Radiation Exposure of Anesthesia Providers: A Summary of Key Learning Points and Resident-Led Radiation Safety Projects

2017 ◽  
Vol 21 (2) ◽  
pp. 165-171 ◽  
Author(s):  
Rachel R. Wang ◽  
Amanda H. Kumar ◽  
Pedro Tanaka ◽  
Alex Macario
Keyword(s):  
Occupational Exposure ◽  
Ionizing Radiation ◽  
Radiation Exposure ◽  
Radiation Safety ◽  
Radiological Protection ◽  
Dose Equivalent ◽  
Occupational Radiation Exposure ◽  
Anesthesia Providers ◽  
Occupational Radiation ◽  
Learning Points

Anesthesia providers are frequently exposed to radiation during routine patient care in the operating room and remote anesthetizing locations. Eighty-two percent of anesthesiology residents (n = 57 responders) at our institution had a “high” or “very high” concern about the level of ionizing radiation exposure, and 94% indicated interest in educational materials about radiation safety. This article highlights key learning points related to basic physical principles, effects of ionizing radiation, radiation exposure measurement, occupational dose limits, considerations during pregnancy, sources of exposure, factors affecting occupational exposure such as positioning and shielding, and monitoring. The principle source of exposure is through scattered radiation as opposed to direct exposure from the X-ray beam, with the patient serving as the primary source of scatter. As a result, maximizing the distance between the provider and the patient is of great importance to minimize occupational exposure. Our dosimeter monitoring project found that anesthesiology residents (n = 41) had low overall mean measured occupational radiation exposure. The highest deep dose equivalent value for a resident was 0.50 mSv over a 3-month period, less than 10% of the International Commission on Radiological Protection occupational limit, with the eye dose equivalent being 0.52 mSv, approximately 4% of the International Commission on Radiological Protection recommended limit. Continued education and awareness of the risks of ionizing radiation and protective strategies will reduce exposure and potential for associated sequelae.

Occupational radiation exposure and morbidity of circulatory disease among diagnostic medical radiation workers in South Korea

2020 ◽  
Vol 77 (11) ◽  
pp. 752-760
Author(s):  
Eun Shil Cha ◽  
Lydia B Zablotska ◽  
Ye Jin Bang ◽  
Won Jin Lee
Keyword(s):  
South Korea ◽  
Radiation Exposure ◽  
Circulatory Disease ◽  
Occupational Radiation Exposure ◽  
Relative Risks ◽  
Medical Radiation ◽  
Radiation Workers ◽  
Occupational Radiation ◽  
Circulatory Diseases

ObjectivesWe investigated the association between low-dose external occupational radiation exposure and circulatory disease morbidity among diagnostic medical radiation workers.MethodsA cohort of 11 500 diagnostic medical radiation workers was linked with the National Dosimetry Registry data and the National Health Insurance Service data. Relative risks (RRs) were calculated to explore the association between occupational factors and circulatory disease morbidity, and excess relative risks per 100 milligray (ERR/100 mGy) were estimated to quantify the radiation dose-response relationship.ResultsOverall, there were 2270 cases of circulatory diseases during 93 696 person-years of observation (average follow-up=8.1 years). RRs for hypertension were significantly increased for individuals who started working before 2000 compared with those who started in 2005 and later. ERR/100 mGy for all circulatory diseases was 0.14 (95% CI −0.57 to 0.99). Radiation risks of cerebrovascular diseases and ischaemic heart disease were non-significantly increased with estimates of individual cumulative doses to the heart (ERR/100 mGy=3.10 (−0.75 to 11.59) and 1.22 (−0.71 to 4.73), respectively). However, ERR estimates were generally more strongly positive for female versus male workers and for younger workers versus more than 50-year-old workers.ConclusionsThis study provides little evidence in support of a positive association between occupational radiation exposure and the overall risk of circulatory disease over a short follow-up period among medical radiation workers in South Korea. However, significantly increased RR with earlier year first worked, elevated ERR in female workers and young workers should be further followed up.

Pelatihan Keselamatan dan Keamanan Radiasi Pengion di RSUP Dr Kariadi Pada Masa Pandemi

2021 ◽  
Author(s):  
Sanggam Ramantisan ◽  
◽  
Siti Akbari Pandaningrum ◽  
Suwardi Suwardi ◽  
Syarifudin Syarifudin ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Radiation Protection ◽  
Radiation Safety ◽  
Community Members ◽  
Medical Field ◽  
Online Delivery ◽  
Face To Face ◽  
Security Training ◽  
Field Practice ◽  
Radiation Workers

Ionizing radiation safety in the medical field, referred to as radiation safety, is an action taken to protect patients, workers, community members, and the environment from the dangers of radiation. One of the efforts to achieve this is by increasing the qualifications of radiation workers in understanding and implementing radiation protection and safety through ionizing radiation safety and security training initiated by the Radiation Protection Officer (PPR) team at Dr. RSUP. Kariadi Semarang. During the current pandemic, implemented the training by modifying what was previously done using face-to-face and field practice into online delivery of material and making videos as a substitute for field practice. As a result, these activities can run well and smoothly. The impression from the training participants stated that this training was beneficial and should be done regularly. Keywords: training, ionizing radiation, radiation protection officer

Impact of considering non-occupational radiation exposure on the association between occupational dose and solid cancer among French nuclear workers

2017 ◽  
Vol 75 (3) ◽  
pp. 199-204 ◽  
Author(s):  
Lucie Fournier ◽  
Enora Cléro ◽  
Eric Samson ◽  
Sylvaine Caër-Lorho ◽  
Dominique Laurier ◽  
...  
Keyword(s):  
Occupational Exposure ◽  
Cancer Risk ◽  
Radiation Exposure ◽  
Cancer Mortality ◽  
Environmental Radiation ◽  
Occupational Radiation Exposure ◽  
X Ray ◽  
Work Related ◽  
The Mean ◽  
Occupational Radiation

ObjectivesThe French nuclear worker cohort allows for the assessment of cancer risk associated with occupational radiation exposure, but workers are also exposed to medical and environmental radiation which can be of the same order of magnitude. This study aims to examine the impact of non-occupational radiation exposures on the dose-risk analysis between occupational radiation exposure and cancer mortality.MethodsThe cohort included workers employed before 1995 for at least one year by CEA, AREVA NC or EDF and badge-monitored for external radiation exposure. Monitoring results were used to calculate occupational individual doses. Scenarios of work-related X-ray and environmental exposures were simulated. Poisson regression was used to quantify associations between occupational exposure and cancer mortality adjusting for non-occupational radiation exposure.ResultsThe mean cumulative dose of external occupational radiation was 18.4 mSv among 59 004 workers. Depending on the hypotheses made, the mean cumulative work-related X-ray dose varied between 3.1 and 9.2 mSv and the mean cumulative environmental dose was around 130 mSv. The unadjusted excess relative rate of cancer per Sievert (ERR/Sv) was 0.34 (90% CI −0.44 to 1.24). Adjusting for environmental radiation exposure did not substantially modify this risk coefficient, but it was attenuated by medical exposure (ERR/Sv point estimate between 0.15 and 0.23).ConclusionsOccupational radiation risk estimates were lower when adjusted for work-related X-ray exposures. Environmental exposures had a very slight impact on the occupational exposure risk estimates. In any scenario of non-occupational exposure considered, a positive but insignificant excess cancer risk associated with occupational exposure was observed.

scholarly journals Assessing the health effects associated with occupational radiation exposure in Korean radiation workers: protocol for a prospective cohort study

BMJ Open ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. e017359 ◽  
Author(s):  
Songwon Seo ◽  
Wan Young Lim ◽  
Dal Nim Lee ◽  
Jung Un Kim ◽  
Eun Shil Cha ◽  
...  
Keyword(s):  
Cohort Study ◽  
Cancer Risk ◽  
Radiation Exposure ◽  
Health Effects ◽  
Prospective Cohort Study ◽  
Prospective Cohort ◽  
Low Dose ◽  
Occupational Radiation Exposure ◽  
Radiation Workers ◽  
Occupational Radiation

IntroductionThe cancer risk of radiation exposure in the moderate-to-high dose range has been well established. However, the risk remains unclear at low-dose ranges with protracted low-dose rate exposure, which is typical of occupational exposure. Several epidemiological studies of Korean radiation workers have been conducted, but the data were analysed retrospectively in most cases. Moreover, groups with relatively high exposure, such as industrial radiographers, have been neglected. Therefore, we have launched a prospective cohort study of all Korean radiation workers to assess the health effects associated with occupational radiation exposure.Methods and analysisApproximately 42 000 Korean radiation workers registered with the Nuclear Safety and Security Commission from 2016 to 2017 are the initial target population of this study. Cohort participants are to be enrolled through a nationwide self-administered questionnaire survey between 24 May 2016 and 30 June 2017. As of 31 March 2017, 22 982 workers are enrolled in the study corresponding to a response rate of 75%. This enrolment will be continued at 5-year intervals to update information on existing study participants and recruit newly hired workers. Survey data will be linked with the national dose registry, the national cancer registry, the national vital statistics registry and national health insurance data via personal identification numbers. Age-specific and sex-specific standardised incidence and mortality ratios will be calculated for overall comparisons of cancer risk. For dose–response assessment, excess relative risk (per Gy) and excess absolute risk (per Gy) will be estimated with adjustments for birth year and potential confounders, such as lifestyle factors and socioeconomic status.Ethics and disseminationThis study has received ethical approval from the institutional review board of the Korea Institute of Radiological and Medical Sciences (IRB No. K-1603-002-034). All participants provided written informed consent prior to enrolment. The findings of the study will be disseminated through scientific peer-reviewed journals and be provided to the public, including radiation workers, via the study website (http://www.rhs.kr/) and onsite radiation safety education.

scholarly journals Study on Occupational Radiation Exposure at Different Hospitals in Nepal using ThermoluminescenceDosimetry

2020 ◽  
Vol 19 (1) ◽  
pp. 180-185
Author(s):  
Prabhash Acharya ◽  
Gita Chalise ◽  
Bipin Rijal ◽  
Hari Prasad Lamichhane ◽  
Buddha Ram Shah
Keyword(s):  
Radiation Exposure ◽  
Radiological Protection ◽  
Occupational Radiation Exposure ◽  
Dose Rates ◽  
Routine Work ◽  
Occupationally Exposed ◽  
Dose Limits ◽  
Radiation Workers ◽  
Set Up ◽  
Occupational Radiation

 The clinical efficacy of using ionizing radiation in diagnosis and treatment of diseases has been revolu­tionized, benefitting humankind and, at the same time, imposing deleterious health effects, if not han­dled carefully. Personnel dosimetry has emerged as an essential tool to monitor occupational radiation exposure. The present study intends to reveal and describe the scenario of occupationally exposed staff by assessing an individual’s dose in radiological facilities at different hospitals in Nepal. Thermo luminescent Dosimetry (TLD) has been used for assessing individual doses. Altogether eight hospitals were chosen from different locations of Nepal. TLD badges were worn by the radiation workers on their chest level while working with the radiological equipment for about three to ten months during their routine work. Later the badges were read out in the TLD badge reader system available at Nepal Academy of Science and Technology (NAST) to obtain the exposed doses. CaSO4: Dy was used as TL phosphor. Exposed doses for health personnel during their routine work were founding the range of (2.21 to 16.17) 0.01 mSv per year, which was low compared to the permissible dose limit of 20 mSv per year set up by International Commission on Radiological Protection(ICRP). Although the exposed dose rates in the monitored hospitals are below the recommended dose limits, it should be made as low as possible based on the ALARA principle.

scholarly journals Occupational radiation exposure and its health effects on interventional medical workers: study protocol for a prospective cohort study

BMJ Open ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. e018333 ◽  
Author(s):  
Seulki Ko ◽  
Hwan Hoon Chung ◽  
Sung Bum Cho ◽  
Young Woo Jin ◽  
Kwang Pyo Kim ◽  
...  
Keyword(s):  
Cohort Study ◽  
Radiation Exposure ◽  
Prospective Cohort Study ◽  
Prospective Cohort ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Occupational Radiation Exposure ◽  
Radiation Workers ◽  
Occupational Radiation

IntroductionAlthough fluoroscopically guided procedures involve a considerably high dose of radiation, few studies have investigated the effects of radiation on medical workers involved in interventional fluoroscopy procedures. Previous research remains in the early stages and has not reached a level comparable with other occupational studies thus far. Furthermore, the study of radiation workers provides an opportunity to estimate health risks at low doses and dose rates of ionising radiation. Therefore, the objectives of this study are (1) to initiate a prospective cohort study by conducting a baseline survey among medical radiation workers who involve interventional fluoroscopy procedures and (2) to assess the effect of occupational radiation exposure and on the overall health status through an in-depth cross-sectional study.Methods and analysisIntervention medical workers in Korea will be enrolled by using a self-administered questionnaire survey, and the survey data will be linked with radiation dosimetry data, National Health Insurance claims data, cancer registry and mortality data. After merging these data, the radiation organ dose, lifetime attributable risk due to cancer and the risk per unit dose will be estimated. For the cross-sectional study, approximately 100 intervention radiology department workers will be investigated for blood tests, clinical examinations such as ultrasonography (thyroid and carotid artery scan) and lens opacity, the validation of badge dose and biodosimetry.Ethics and disseminationThis study was reviewed and approved by the institutional review board of Korea University (KU-IRB-12-12-A-1). All participants will provide written informed consent prior to enrolment. The findings of the study will be disseminated through peer-reviewed scientific journals, conference presentations, and a report will be submitted to the relevant public health authorities in the Korea Centers for Disease Control and Prevention to help with the development of appropriate research and management policies.

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