지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.6
- 수록면
- 388 - 397 (10page)
이용수
초록· 키워드
오류제보하기
Objective: The purpose of the study was to calculate the effective and absorbed organ doses of cone-beam computed tomography (CBCT) in pediatric patient using personal computer-based Monte Carlo (PCXMC) software and to compare them with those measured using thermoluminescent dosimeters (TLDs) and anthropomorphic phantom.
Materials and Methods: Alphard VEGA CBCT scanner was used for this study. A large field of view (FOV) (20.0 ㎝ x 17.9 ㎝) was selected because it is a commonly used FOV for orthodontic analyses in pediatric patients. Ionization chamber of dose-area product (DAP) meter was located at the tube side of CBCT scanner. With the clinical exposure settings for a 10-year-old patient, DAP value was measured at the scout and main projection of CBCT. Effective and absorbed organ doses of CBCT at scout and main projection were calculated using PCXMC and PCXMCRotation software respectively. Effective dose and absorbed organ doses were compared with those obtained by TLDs and a 10-year-old child anthropomorphic phantom at the same exposure settings.
Results: The effective dose of CBCT calculated by PCXMC software was 292.6 μSv, and that measured using TLD and anthropomorphic phantom was 292.5 μSv. The absorbed doses at the organs largely contributing to effective dose showed the small differences between two methods within the range from –18% to 20%.
Conclusion: PCXMC software might be used as an alternative to the TLD measurement method for the effective and absorbed organ dose estimation in CBCT of large FOV in pediatric patients.
Materials and Methods: Alphard VEGA CBCT scanner was used for this study. A large field of view (FOV) (20.0 ㎝ x 17.9 ㎝) was selected because it is a commonly used FOV for orthodontic analyses in pediatric patients. Ionization chamber of dose-area product (DAP) meter was located at the tube side of CBCT scanner. With the clinical exposure settings for a 10-year-old patient, DAP value was measured at the scout and main projection of CBCT. Effective and absorbed organ doses of CBCT at scout and main projection were calculated using PCXMC and PCXMCRotation software respectively. Effective dose and absorbed organ doses were compared with those obtained by TLDs and a 10-year-old child anthropomorphic phantom at the same exposure settings.
Results: The effective dose of CBCT calculated by PCXMC software was 292.6 μSv, and that measured using TLD and anthropomorphic phantom was 292.5 μSv. The absorbed doses at the organs largely contributing to effective dose showed the small differences between two methods within the range from –18% to 20%.
Conclusion: PCXMC software might be used as an alternative to the TLD measurement method for the effective and absorbed organ dose estimation in CBCT of large FOV in pediatric patients.
목차
ABSTRACT
Ⅰ. 서론
Ⅱ. 재료 및 방법
Ⅲ. 결과
Ⅳ. 고찰
참고문헌
참고문헌 (28)
참고문헌 신청
Arai Y / 1999 / Development of a compact computed tomographic apparatus for dental use / Dentomaxillofac Radiol 28:245~248
Lofthag-Hansen S / 2009 / Cone-beam CT for preoperative implant planning in the posterior mandible : visibility of anatomic landmarks / Clin Implant Dent Relat Res 11:246~255
Momin MA / 2013 / Correlation of mandibular impacted tooth and bone morphology determined by cone beam computed topography on a premise of third molar operation / Surg Radiol Anat 35:311~318
Patel S / 2009 / New dimensions in endodontic imaging: part 1. Conventional and alternative radiographic systems / Int Endod J 42:447~462
Silva MA / 2008 / Cone-beam computed tomography for routine orthodontic treatment planning : a radiation dose evaluation / Am J Orthod Dentofacial Orthop 133:640e1~640e5
Lofthag-Hansen S / 2009 / Cone-beam CT for preoperative implant planning in the posterior mandible : visibility of anatomic landmarks / Clin Implant Dent Relat Res 11:246~255
Momin MA / 2013 / Correlation of mandibular impacted tooth and bone morphology determined by cone beam computed topography on a premise of third molar operation / Surg Radiol Anat 35:311~318
Patel S / 2009 / New dimensions in endodontic imaging: part 1. Conventional and alternative radiographic systems / Int Endod J 42:447~462
Silva MA / 2008 / Cone-beam computed tomography for routine orthodontic treatment planning : a radiation dose evaluation / Am J Orthod Dentofacial Orthop 133:640e1~640e5
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