Earticle

초록

영어

Background: In recent events of the coronavirus disease 2019 (COVID-19) pandemic, computed tomography (CT) scans are being globally used as a complement to the reverse-transcription polymerase chain reaction (RT-PCR) tests. It will be important to be aware of major organ dose levels, which are more relevant quantity to derive potential long-term adverse effect, for Korean pediatric and adult patients undergoing CT for COVID-19. Materials and Methods: We calculated organ dose conversion coefficients for Korean pediatric and adult CT patients directly from Korean pediatric and adult computational phantoms combined with Monte Carlo radiation transport techniques. We then estimated major organ doses delivered to the Korean child and adult patients undergoing CT for COVID-19 combining the dose conversion coefficients and the international survey data. We also compared our Korean dose conversion coefficients with those from Caucasian reference pediatric and adult phantoms. Results and Discussion: Based on the dose conversion coefficients we established in this study and the international survey data of COVID-19-related CT scans, we found that Korean 7-yearold child and adult males may receive about 4–32 mGy and 3–21 mGy of lung dose, respectively. We learned that the lung dose conversion coefficient for the Korean child phantom was up to 1.5-fold greater than that for the Korean adult phantom. We also found no substantial difference in dose conversion coefficients between Korean and Caucasian phantoms. Conclusion: We estimated radiation dose delivered to the Korean child and adult phantoms undergoing COVID-19-related CT examinations. The dose conversion coefficients derived for different CT scan types can be also used universally for other dosimetry studies concerning Korean CT scans. We also confirmed that the Caucasian-based CT organ dose calculation tools may be used for the Korean population with reasonable accuracy.

목차

ABSTRACT
Introduction
Materials and Methods
1. Korean Computational Human Phantoms
2. Organ Dose Calculation
3. Comparison of Dose Conversion Coefficients with Caucasian Data
Results and Discussion
1. Organ Dose Coefficients for Korean Child and Adult Patients
2. Organ Doses for Korean Patients Undergoing COVID-19-Related CT
3. Comparison of Organ Dose Conversion Coefficients with Caucasian Data
4. Limitations
Conclusion
Conflict of Interest
Acknowledgements
Author Contribution
References

키워드

저자

• Tristan Won [ Winston Churchill High School, Potomac, MD, USA ]
• Ae-Kyoung Lee [ Radio & Satellite Research Division, Electronics and Telecommunications Research Institute, Daejeon, Korea ]
• Hyung-do Choi [ Radio & Satellite Research Division, Electronics and Telecommunications Research Institute, Daejeon, Korea ]
• Choonsik Lee [ Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629