scholarly journals Safe exposure distances for transcranial magnetic stimulation based on computer simulations

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5034 ◽  
Author(s):  
Iam Palatnik de Sousa ◽  
Carlos R. H. Barbosa ◽  
Elisabeth Costa Monteiro
Keyword(s):  
Computer Simulation ◽  
Transcranial Magnetic Stimulation ◽  
Occupational Exposure ◽  
Ionizing Radiation ◽  
Radiation Protection ◽  
Computer Simulations ◽  
Magnetic Stimulation ◽  
Safe Distance ◽  
3D Data ◽  
Safety Guidelines

The results of a computer simulation examining the compliance of a given transcranial magnetic stimulation device to the 2010 International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines are presented. The objective was to update the safe distance estimates with the most current safety guidelines, as well as comparing these to values reported in previous publications. The 3D data generated was compared against results available in the literature, regarding the MCB-70 coil by Medtronic. Regarding occupational exposure, safe distances of 1.46 m and 0.96 m are derived from the simulation according to the 2003 and 2010 ICNIRP guidelines, respectively. These values are then compared to safe distances previously reported in other studies.

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.

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.  

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