척추 방사선수술 시 다엽콜리메이터 위치 오차의 임상적 위험성 평가

• 영문명: Evaluation of Clinical Risk according to Multi-Leaf Collimator Positioning Error in Spinal Radiosurgery
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 강동진(Dong‑Jin Kang) 오건(Geon Oh) 신영주(Young‑Joo Shin) 강진규(Jin-Kyu Kang) 정재용(Jae-Yong Jung) 이보람(Boram Lee)
• 간행물 정보: 『방사선기술과학』제46권 제6호, 527~533쪽, 전체 7쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2023.12.31

영문 초록

The purpose of this study is to evaluate the clinical risk of spinal radiosurgery by calculating the dose difference due to dose calculation algorithm and multi-leaf collimator positioning error. The images acquired by the CT simulator were recalculated by correcting the multi-leaf collimator position in the dose verification program created using MATLAB and applying stoichiometric calibration and Monte Carlo algorithm. With multi-leaf collimator positioning error, the clinical target volume (CTV) showed a dose difference of up to 13% in the dose delivered to the 95% volume, while the gross tumor volume (GTV) showed a dose difference of 9%. The average dose delivered to the total volume showed dose variation from -8.9% to 9% and -10.1% to 10.2% for GTV and CTV, respectively. The maximum dose delivered to the total volume of the spinal cord showed a dose difference from -14.2% to 19.6%, and the dose delivered to the 0.35 ㎤ volume showed a dose difference from -15.5% to 19.4%. In future research, automating the linkage between treatment planning systems and dose verification programs would be useful for spinal radiosurgery.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

척추 방사선수술 다엽콜리메이터 위치 오차 화학 양론적 교정 전산모사 알고리즘 선량 검증 프로그램 Spinal radiosurgery Multi-leaf collimator positioning error Stoichiometric calibration Monte-Carlo algorithm Dose verification program