전립선암 영상유도방사선치료 시 pCT와 CBCT에 따른 치료계획별 체적선량의 변화

• 영문명: Changes in Volume Dose by Treatment Plan According to pCT and CBCT in Image-guided Radiation Therapy for Prostate Cancer
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 원영진(Young Jin Won) 김정훈(Jung Hoon Kim)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제41권 제3호, 209~214쪽, 전체 6쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2018.06.30

영문 초록

Abstract The results of CBCT was obtained using image guided radiation therapy for radiation therapy in 5 prostate cancer patients. Using these results, we compared and evaluated the dose changes according to the treatment plan depending on the volume and position of bladder, rectum, and prostate. The 28 images of CBCT were acquired using On-Board Imaging device before radiotherapy. After the outline of bladder, rectum, and PTV, pCT images and CBCT images for radiotherapy were treated respectively. The volume of the bladder was increased by 105.6% and decreased by 45.2%. The volume of the rectum was increased by 30.5% and decreased by 20.3%. Prostate volume was increased by 6.3% and decreased by 12.3%. The mean dose of the rectum was higher in the CBCT than in the pCT, and V40 (equivalent to 40 Gy) of the bladder showed a reduction in all treatment regimens in the CBCT than in the pCT. Conformity treatment and homogeneity index of PTV showed better results in all treatment regimens using pCT than CBCT. It was found that the dose distribution of the pelvic internal organs varied greatly according to the patient s condition and pretreatment.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고찰 및 결론

키워드

영상유도방사선치료 온보드영상장치 전립선암 골반내 장기 부피적회전방사선치료 Image-Guided Radiation Therapy On-Board image Prostate cancer Pelvic organ Volumetric modulated arc therapy