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Dosimetric evaluation of the radiation exposure on radiotherapy workers

Year 2020, Volume: 3 Issue: 2, 132 - 136, 19.03.2020
https://doi.org/10.32322/jhsm.679624

Abstract

Aim: Radiotherapy is one of the most commonly used cancer treatment methods and high dose ionizing radiation is used to provide therapeutic effect. Radiation exposure is the biggest occupational problem for radiotherapy personnel working in this radiation environment and serious protection measures must be taken. In this regard, the last 3 years of personal dosimeter values of all the staff working in our radiation oncology clinic were examined and radiation exposure rates were evaluated.
Material and Method: Between 2015 and 2018, the data of TLD measurements of personal dosimeters of all personnel were recorded, the amount of doses exposed in the measurement periods, the average doses exposed in the measurement periods according to occupational groups, the annual total dose exposure and the differences between the groups were evaluated.
Results: For measurements in a total of 18 periods, the average amount of dose each employee is 0.21 mSv per period. When evaluated according to profession groups they were; 0,20 mSv in physicians, 0,20 mSv in medical physicists and 0,21 mSv in technicians. There was no statistically significant difference between the groups. While evaluating the periods individually, the doses exposed by the occupational groups are similar, but there is a significant difference between the physicians and other workers in the 1st period of 2016 and in the 5th period of 2017 and between the medical physicists and other workers in the 3rd period body doses of 2018 and the fourth period of 2018.
Conclusion: Staff training, dosimetric measurements and inspections are extremely important in a radiation oncology center. All of our measurement values performed in our clinic, where we have radiotherapy experience for nearly 30 years, were determined in accordance with international standards. In this direction, it is recommended that all centers working with radiation should make current evaluations meticulously.

References

  • Referans1. Perez & Brady's Principles and Practice of Radiation Oncology. 7. edition. Philadelphia: Edward C. Halperin; 2018.
  • Referans2. Clinical Radiation Oncology. 4th edition. Philadelphia: Joel Tepper; 2015.
  • Referans3. Radyasyon güvenliği yönetmeliği, Görev Gereği Işinlanmalar İçin Radyoizotoplarin Vücuda Yilda Alinma Sinirlari (ALI), TAEK.
  • Referans4. T.C. Sağlık Bakanlığı Radyasyon güvenliği yönetmeliği. Resmi Gazete; Sayı: 23999.
  • Referans5. ICRP-60, International Commission on Radiological Protection. (1990) Recommendation of the International Commission on Radiological Protection. Annals of the ICRP, (1991), 21, Publication 60. Oxford: Pergamon Press.
  • Referans6. United Nations Scientific CommiCee on the Effects of Atomic Radiation: Sources and effects of Ionizing Radiation (2006) UNSCEAR. Report to the General Assembly, with Scientific Annexes, United Nations, New York, 2008.
  • Referans7. Qian QZ, Cao XK, Liu HY, et al. Analysis of Hemogram of Radiation Workers in Tangshan, China. J Clin Lab Anal. 2016 Sep;30(5):682-8. doi: 10.1002/jcla.21922. Epub 2016 Mar 14.
  • Referans8. Braga-Tanaka I 3rd, Tanaka S, Kohda A, et al. Experimental studies on the biological effects of chronic low dose-rate radiation exposure in mice: overview of the studies at the Institute for Environmental Sciences. Int J Radiat Biol. 2018 May;94(5):423-433. doi: 10.1080/09553002.2018.1451048. Epub 2018 Apr 3.
  • Referans9. Lee WJ, Preston DL, Cha ES, Ko S, Lim H. Thyroid cancer risks among medical radiation workers in South Korea, 1996-2015. Environ Health. 2019 Mar 11;18(1):19. doi: 10.1186/s12940-019-0460-z.
  • Referans10. Smith GB, BaCle G, Yair G, NavarreCe, GuilmeCee A, Raymond RA (2011) Exploring biological effects of low level radiation from the other side of background. Health Phys, 100: 263-265.
  • Referans11. Zhu XJ, Du QQ, Lu ZH, Yuan KK, Yang HZ. [Analysis of individual dose monitoring results among radiation workers in a first-class hospital at Grade 3 from 2010 to 2017]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2018 Nov 20;36(11):827-829. doi: 10.3760/cma.j.issn.1001-9391.2018.11.007.
  • Referans12. Wang C, Mo SF, Zhang JB, Li JR, Huang RL, Tan HY. [Personal dose monitoring of radiation workers in medical institutions at the municipal level and below in a city from 2011 to 2014]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2017 Aug 20;35(8):594-597. doi: 10.3760/cma.j.issn.1001-9391.2017.08.010.
  • Referans13. Ritz B, Morgenstern H, Froines J, Young BB (1999) Effects of exposure to external ionizing radiation on cancer mortality in nuclear workers monitored for radiation at Rocketdyne/ Atomics International. Amer J Ind Med, 35: 21–31.
  • Referans14. Pierce DA and Preston DL (2000) Radiation-related cancer risks at low doses among atomic bomb survivors. Radiat Res, 154: 178-86.
  • Referans15. Preston D, Ron E, Tokuokas, Funamutos, Nishi N, Soda M, Maduchi K (2007) Solid cancer incidence in atom bomb survivors 1958-1998. Radiat Res, 168: 1-64.
  • Referans16. Pierce DA, Shimizu Y, Preston DL, Vaeth M, Mabuchi K (1996) Studies of the mortality of atomic bomb survivors. Report 12, Part I. Cancer: 1950-1990. Radiat Res, 146: 1-27.

Radyoterapi çalışanlarının maruz kaldığı radyasyon miktarının dozimetrik değerlendirilmesi

Year 2020, Volume: 3 Issue: 2, 132 - 136, 19.03.2020
https://doi.org/10.32322/jhsm.679624

Abstract

Amaç: Radyoterapi en sık kullanılan kanser tedavi yöntemlerinden birisidir ve tedavi etkisinin sağlanabilmesi için yüksek doz iyonize radyasyon kullanılmaktadır. Bu radyasyonlu ortamda çalışan radyoterapi personelleri için radyasyona maruz kalmak en büyük mesleki sorundur ve ciddi korunma önlemleri alınması gerekmektedir. Bu doğrultuda radyasyon onkolojisi kliniğimizde çalışan tüm personelimizin son 3 yıllık kişisel dozimetre değerleri incelenmiş ve radyasyon maruziyet oranları değerlendirilmiştir.
Gereç ve Yöntem: 2015-2018 yılları arasında tüm personelin kişisel dozimetreleri TLD ölçümleri verileri kaydedilmiş, ölçüm periyotlarındaki maruz kaldıkları doz miktarları, meslek gruplarına göre ölçüm periyotlarındaki maruz kalınan ortalama dozlar, yıllık toplam doz maruziyeti ve gruplar arasındaki farklılıklar değerlendirilmiştir.
Bulgular: Toplam 18 periyottaki ölçümlerde, her bir personelin periyot başına ortalama maruz kaldığı doz miktarı 0,21 mSv'dir. Meslek gruplarına göre değerlendirildiğinde; kliniğimiz doktorlarında 0,20 mSv, medikal fizik uzmanlarında 0,20 mSv, teknikerlerimizde ise 0,21 mSv'dir. Gruplar arasında anlamlı istatistiksel fark saptanmamıştır. Periyotların ayrı ayrı değerlendirilmesinde genel olarak meslek gruplarının maruz kaldıkları dozlar birbirine benzerken sadece 2016 1. Periyot ve 2017 5. periyotta doktorlar ile diğer gruplarda, 2018 3. periyot vücut dozları ve 4. periyotta medikal fizik uzmanları ile diğer iki grup arasında anlamlı farkın olduğu görülmektedir.
Sonuç: Bir radyasyon onkolojisi merkezinde personel eğitimleri, dozimetrik ölçümler ve denetimler son derece önemlidir. Yaklaşık 30 yıldır radyoterapi tecrübemizin olduğu kliniğimizde yapılan tüm ölçüm değerlerimizin uluslararası standartlara uygun olarak saptanmıştır. Bu doğrultuda radyasyonla çalışan tüm merkezlerin mevcut değerlendirmeleri titizlikle yapmaları önerilmektedir.

References

  • Referans1. Perez & Brady's Principles and Practice of Radiation Oncology. 7. edition. Philadelphia: Edward C. Halperin; 2018.
  • Referans2. Clinical Radiation Oncology. 4th edition. Philadelphia: Joel Tepper; 2015.
  • Referans3. Radyasyon güvenliği yönetmeliği, Görev Gereği Işinlanmalar İçin Radyoizotoplarin Vücuda Yilda Alinma Sinirlari (ALI), TAEK.
  • Referans4. T.C. Sağlık Bakanlığı Radyasyon güvenliği yönetmeliği. Resmi Gazete; Sayı: 23999.
  • Referans5. ICRP-60, International Commission on Radiological Protection. (1990) Recommendation of the International Commission on Radiological Protection. Annals of the ICRP, (1991), 21, Publication 60. Oxford: Pergamon Press.
  • Referans6. United Nations Scientific CommiCee on the Effects of Atomic Radiation: Sources and effects of Ionizing Radiation (2006) UNSCEAR. Report to the General Assembly, with Scientific Annexes, United Nations, New York, 2008.
  • Referans7. Qian QZ, Cao XK, Liu HY, et al. Analysis of Hemogram of Radiation Workers in Tangshan, China. J Clin Lab Anal. 2016 Sep;30(5):682-8. doi: 10.1002/jcla.21922. Epub 2016 Mar 14.
  • Referans8. Braga-Tanaka I 3rd, Tanaka S, Kohda A, et al. Experimental studies on the biological effects of chronic low dose-rate radiation exposure in mice: overview of the studies at the Institute for Environmental Sciences. Int J Radiat Biol. 2018 May;94(5):423-433. doi: 10.1080/09553002.2018.1451048. Epub 2018 Apr 3.
  • Referans9. Lee WJ, Preston DL, Cha ES, Ko S, Lim H. Thyroid cancer risks among medical radiation workers in South Korea, 1996-2015. Environ Health. 2019 Mar 11;18(1):19. doi: 10.1186/s12940-019-0460-z.
  • Referans10. Smith GB, BaCle G, Yair G, NavarreCe, GuilmeCee A, Raymond RA (2011) Exploring biological effects of low level radiation from the other side of background. Health Phys, 100: 263-265.
  • Referans11. Zhu XJ, Du QQ, Lu ZH, Yuan KK, Yang HZ. [Analysis of individual dose monitoring results among radiation workers in a first-class hospital at Grade 3 from 2010 to 2017]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2018 Nov 20;36(11):827-829. doi: 10.3760/cma.j.issn.1001-9391.2018.11.007.
  • Referans12. Wang C, Mo SF, Zhang JB, Li JR, Huang RL, Tan HY. [Personal dose monitoring of radiation workers in medical institutions at the municipal level and below in a city from 2011 to 2014]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2017 Aug 20;35(8):594-597. doi: 10.3760/cma.j.issn.1001-9391.2017.08.010.
  • Referans13. Ritz B, Morgenstern H, Froines J, Young BB (1999) Effects of exposure to external ionizing radiation on cancer mortality in nuclear workers monitored for radiation at Rocketdyne/ Atomics International. Amer J Ind Med, 35: 21–31.
  • Referans14. Pierce DA and Preston DL (2000) Radiation-related cancer risks at low doses among atomic bomb survivors. Radiat Res, 154: 178-86.
  • Referans15. Preston D, Ron E, Tokuokas, Funamutos, Nishi N, Soda M, Maduchi K (2007) Solid cancer incidence in atom bomb survivors 1958-1998. Radiat Res, 168: 1-64.
  • Referans16. Pierce DA, Shimizu Y, Preston DL, Vaeth M, Mabuchi K (1996) Studies of the mortality of atomic bomb survivors. Report 12, Part I. Cancer: 1950-1990. Radiat Res, 146: 1-27.
There are 16 citations in total.

Details

Primary Language Turkish
Subjects Health Care Administration
Journal Section Original Article
Authors

Fatih Göksel 0000-0003-3164-0767

Fatih Demircioğlu

Publication Date March 19, 2020
Published in Issue Year 2020 Volume: 3 Issue: 2

Cite

AMA Göksel F, Demircioğlu F. Radyoterapi çalışanlarının maruz kaldığı radyasyon miktarının dozimetrik değerlendirilmesi. J Health Sci Med / JHSM. March 2020;3(2):132-136. doi:10.32322/jhsm.679624

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