en Radiation Biology Radiation Biology گزارش کوتاه Short Report <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">A medical radiation staff is a person who provides medical services to use radiation for the diagnosis and treatment of diseases in humans. To ensure radiation safety, they have to work according to the ALARA principle and monitor radiation exposure within dose limit. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Materials and Methods: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">The study was estimating the mean annual occupational radiation dose for medical staff in Thailand by using retrospective OSLDs data at the Bureau of Radiology and Medical Devices. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Results: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">A total of 2040 medical institutes, consists of 18 430 OSLD badges for diagnostic radiology, 645 for radiotherapy, and 138 for nuclear medicine. The mean annual occupational radiation dose reports as Hp (10), Hp (0.07), and Hp (3). The analysis shows that the mean annual radiation dose in diagnostic radiology staff was 0.023 &plusmn; 0.065, 0.023 &plusmn; 0.062 and 0.023 &plusmn; 0.061 mSv respectively. The radiotherapy staff was 0.015 &plusmn; 0.023, 0.019 &plusmn; 0.035 and 0.018 &plusmn; 0.022 mSv and the nuclear medicine staff was 0.038 &plusmn; 0.029, 0.038&plusmn;0.033 and 0.037 &plusmn; 0.028 mSv. The result reveals statistically non-significant differences in the mean effective doses between the medical staff who work with different field. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Conclusion: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">The occupational radiation dose depends on several factors within the workplace, job description, annual workload, distribution of the workload among workers and radiation protection practices. An evaluation of how such factors affect occupational exposure is beyond the scope of this study. The mean annual occupational radiation dose of nuclear medicine staff was greater than the diagnostic radiology and radiotherapy staff respectively. However, all of the occupational radiation doses were within ICRP dose limit.&nbsp;</span></span></span></span></span></span></span></span></span></div> Annual effective dose, absorbed dose, radiation protection, occupational exposure. 763 766 http://ijrr.com/browse.php?a_code=A-10-1-1237&slc_lang=en&sid=1 D. phinsiri 7900319475328460028110 7900319475328460028110 No Department of Radiological Technology, Faculty of Allied Health Sciences, Thammasat University P. Asavaruangkitkul 7900319475328460028111 7900319475328460028111 No Department of Radiological Technology, Faculty of Allied Health Sciences, Thammasat University S. Kurdsithong 7900319475328460028112 7900319475328460028112 No Bureau of Radiation and Medical Devices, Department of Medical Sciences, Ministry of Public Health D. Suttho dutsadee.s@allied.tu.ac.th 7900319475328460028113 7900319475328460028113 Yes Department of Radiological Technology, Faculty of Allied Health Sciences, Thammasat University