학술논문
子宮頸部癌 腔內 放射線 照射裝置에 依한 直腸 및 膀胱의 被曝線量 評價
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- 영문명
- Dose Distribution of Rectum and Bladder in Intracavitary Irradiation
- 발행기관
- 대한방사선종양학회
- 저자명
- 추성실(S.S.Chu) 오원용(W.Y.Oh) 서창옥(C.O.Suh) 김귀언(G.E.Kim)
- 간행물 정보
- 『대한방사선종양학회지』제2권 제2호, 261~270쪽, 전체 10쪽
- 주제분류
- 의약학 > 종양학
- 파일형태
- 발행일자
- 1984.12.30
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국문 초록
영문 초록
The intrauterine irradiation is essential to achieve adequate tumor dose to central tumor mass of uterine malignancy in radiotherapy.
The complications of pelvic organ are known to be directly related to radiation dose and physical parameters.
The simulation radiogram and medical records of 203 patients who were treated with intrauterine irradiation from Feb. 1983 to Oct 1983, were critically analized.
The physical parameters to include distances between lateral walls of vaginal fornices, longitudinal and lateral angles of tandem applicator to the body axis, the distance from the external os of uterine cervix to the central axis of ovoids were measured for low dose rate irradiation system and high dose rate remote control afterloading system.
The radiation doses and dose distributions within cervical area including interesting points and bladder, rectum, according to sources arrangement and location of applicator, were estimated with personal computer.
Followings were summary of study results;
1. In distances between lateral walls of vaginal fornices, the low dose rate system showed as 4~7 cm width and high dose rate system showed as 5~6 cm.
2. In horizontal angulation of tandem to body axis, the low dose rate system revealed mid position 64.6%, left deviation 19/2% and right deviation 16.2%.
3. In longitudinal angulation of tandem to body axis, the mid position was 11.8% and anterior angulation 88.2% in low dose rate system but in high dose rate system, anterior angulation was 98.5%.
4. Down ward displacement of ovoids below external os was only 3% in low dose rate system and 66.7% in high dose rate system.
5. Inradiation source arrangement, the most activites of tandem and ovoid were 35 by 30 in low dose rate system but 50 by 40 in high dose rate system.
6. In low and high dose rate system, the total doses and TDF were 80, 70 Gy and 141, 123, including 40 Gy external irradiation.
7. The doses and TDF in interesting points Co, B, sere 98, 47 Gy and 230, 73 in high dose rate system but in low dose rate system, 125, 52 Gy and 262, 75 respectively.
8. Doses and TDF in bladder and rectum were 70, 68 Gy and 124, 120 in low dose rate system, but in high dose rate system, 58, 64 Gy and 98, 110 respectively, and then grades of injuries in bladder and rectum were 25, 30% and 18, 23% respectively.
목차
키워드
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