메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
신동석 (가톨릭대학교(성의교정) 생체의공학연구소) 강성희 (가톨릭대학교) 김동수 (가톨릭대학교) 김태호 (가톨릭대학교) 김경현 (가톨릭대학교(성의교정) 생체의공학연구소) 조민석 (서울아산병원) 노유윤 (가톨릭대학교(성의교정) 생체의공학연구소) 윤도건 (가톨릭대학교) 서태석 (가톨릭대학교)
저널정보
한국의학물리학회 의학물리 의학물리 제27권 제4호
발행연도
2016.12
수록면
203 - 212 (10page)
DOI
https://doi.org/10.14316/pmp.2016.27.4.203

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
Dose differences between three-dimensional (3D) and four-dimensional (4D) doses could be varied according to the geometrical relationship between a planning target volume (PTV) and an organ at risk (OAR). The purpose of this study is to evaluate the correlation between the overlap volume histogram (OVH), which quantitatively shows the geometrical relationship between the PTV and OAR, and the dose differences. 4D computed tomography (4DCT) images were acquired for 10 liver cancer patients. Internal target volume-based treatment planning was performed. A 3D dose was calculated on a reference phase (end-exhalation). A 4D dose was accumulated using deformation vector fields between the reference and other phase images of 4DCT from deformable image registration, and dose differences between the 3D and 4D doses were calculated. An OVH between the PTV and selected OAR (duodenum) was calculated and quantified on the basis of specific overlap volumes that corresponded to 10%, 20%, 30%, 40%, and 50% of the OAR volume overlapped with the expanded PTV. Statistical analysis was performed to verify the correlation with the OVH and dose difference for the OAR. The minimum mean dose difference was 0.50 Gy from case 3, and the maximum mean dose difference was 4.96 Gy from case 2. The calculated range of the correlation coefficients between the OVH and dose difference was from ?0.720 to ?0.712, and the R-square range for regression analysis was from 0.506 to 0.518 (p-value <0.05). However, when the 10% overlap volume was applied in the six cases that had OVH value ≤2, the average percent mean dose differences were 34.80±12.42%. Cases with quantified OVH values of 2 or more had mean dose differences of 29.16±11.36%. In conclusion, no significant statistical correlation was found between the OVH and dose differences. However, it was confirmed that a higher difference between the 3D and 4D doses could occur in cases that have smaller OVH value.

목차

등록된 정보가 없습니다.

참고문헌 (24)

참고문헌 신청

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0