Deep Inspiration Breath Holding을 적용한 유방암 세기변조방사선치료 시 위치잡이오차 분석을 통한 선량 평가

• 영문명: Dosimetric Comparison of Setup Errors in Intensity Modulated Radiation Therapy with Deep Inspiration Breath Holding in Breast Cancer Radiation Therapy
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 함일식(Ham Il-Sik) 조평곤(Cho Pyong-Kon) 정강교(Jung Kang-Kyo)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제42권 제2호, 173~143쪽, 전체 -29쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2019.04.30

영문 초록

The aim of this study was analyzed the setup error of breast cancer patients in intensity modulated radiation therapy(IMRT) with deep inspiration breath holding(DIBH) and was analyzed the dose distribution due to setup error. A total of 45 breast cancer cases were performed a retrospective clinical analysis of setup error. In addition, the re-treatment planning was carried by shifting the setup error from the isocenter at the treatment. Based on this, the dose distribution of PTV and OARs was compared and analyzed. The 3D error for small breast group and medium breast group and large breast group were 3.1 mm and 3.7 mm and 4.1 mm, respectively. The difference between the groups was statistically significant(P=0.003). DVH results showed HI, CI for the PTV difference between standard treatment plan and re-treatment plan of 14.4%, 4%. The difference in D 5 and V 20 of the ipsilateral lung was 5.6%, 13% respectively. The difference in D 5 and V 5 of the heart of right breast cancer patients was 6.8%, 8% respectively. The difference in D 5 , V 20 of the heart of left breast cancer patients was 7.2%, 23.5% respectively. In this study, there was a significant association between breast size and significant setup error in breast cancer patients with DIBH. In addition, it was found that the dose distribution of the PTV and OARs varied according to the setup error.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

키워드

위치잡이 오차 깊은들숨호흡멈춤 세기변조방사선치료 영상유도방사선치료 유방암 Setup error Deep inspiration breath hold Intensity modulated radiation therapy Image guided radiation therapy Breast cancer