학술논문
Target movement according to cervical lymph node level in head and neck cancer and its clinical significance
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- 영문명
- Target movement according to cervical lymph node level in head and neck cancer and its clinical significance
- 발행기관
- 대한방사선종양학회
- 저자명
- Hoon Sik Choi Bae Kwon Jeong Hojin Jeong In Bong Ha Bong-Hoi Choi Ki Mun Kang
- 간행물 정보
- 『대한방사선종양학회지』제41권 제4호, 283~291쪽, 전체 9쪽
- 주제분류
- 의약학 > 종양학
- 파일형태
- 발행일자
- 2023.12.31
4,000원
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국문 초록
영문 초록
Purpose: To evaluate set-up error for head and neck cancer (HNC) patients according to each neck lymph node (LN) level. And clinical factors affecting set-up error were analyzed.
Materials and Methods: Reference points (RP1, RP2, RP3, and RP4) representing neck LN levels I to IV were designated. These RP were contoured on simulation computed tomography (CT) and cone-beam CT of 89 HNC patients with the same standard. After image registration was performed, movement of each RP was measured. Univariable logistic regression analyses were performed to analyze clinical factors related to measured movements.
Results: The mean value of deviation of all axes was 1.6 mm, 1.3 mm, 1.8 mm, and 1.5 mm for RP1, RP2, RP3, and RP4, respectively. Deviation was over 3 mm in 24 patients. Movement of more than 3 mm was observed only in RP1 and RP3. In RP1, it was related to bite block use. Movement exceeding 3 mm was most frequently observed in RP3. Primary tumor and metastatic LN volume change were clinical factors related to the RP3 movement.
Conclusion: Planning target volume margin of 4 mm for neck LN level I, 3 mm for neck LN level II, 5 mm for neck LN level III, and 3 mm for neck LN level IV was required to include all movements of each LN level. In patients using bite block, changes in primary tumor volume, and metastatic LN volume were related to significant movement.
목차
Introduction
Materials and Methods
Results
Discussion and Conclusion
Statement of Ethics
Conflict of Interest
Funding
Author Contributions
Data Availability Statement
References
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