【网学提醒】：本文主要为网上学习者提供乳腺癌根治术后胸壁放疗技术与剂量分布，希望对需要乳腺癌根治术后胸壁放疗技术与剂量分布网友有所帮助，学习一下吧!
资料包括： 论文(3页2383字)
说明：
摘要: 乳腺癌根治术后病人CT图像送入三维治疗计划系统,观察6 MV X线切线照射及电子线垂直照射胸壁时的剂量分布。包括内乳淋巴结和不包括内乳淋巴结的6 MV X线切线照射无需楔形板;单纯电子线垂直照射,即使是6 MeV低能电子线,肺组织受照亦相当严重;6 MeV电子线配合皮肤表面填0.5 cm厚组织等效物,肺组织受照较小,皮肤剂量提高,但内乳淋巴结与其表面皮肤剂量不能两者兼顾;9 MeV电子线配合皮肤表面填不等厚度组织等效物,可使得90%等效剂量包括皮肤、胸壁和内乳淋巴结而肺组织受照很少;对皮肤和内乳淋巴结均需高量照射者,电子线配合皮肤表面填组织等效物垂直照射较X线切线照射有明显优势。
关键词： 乳腺癌,根治术,放射治疗
Chest wall radiotherapy technique and dose distribution for patients of breast cancer after radical mastectomy
Abstract Sending the CT images of the patients of breast cancer after radical mastectomy to CADPLAN 3D TPS, studying the dose distribution of 6 MV X-ray tangential irradiation and different energy electron ray perpendicular irradiation to chest wall. Some results were presented. Including or not including the intramammary lymph. It is not necessary for 6 MV X beam tangential irradiation to chest wall of the patient of brest cancer after radical mastectomy. Perpendicular irradiation by 6 MV electron beam only the irradiation of the lung is serious and the dose of the skin is low. Perpendicular irradiation by 6 MV electron beam with 0.5 cm bolus as compensator, it can reduce the irradiation of the lung and make dose of the skin high but it will reduce the dose of intramammary lymph if above it the skin is overlaid of bolus. Perpendicular irradiation by 9 MeV electron beam with unequal thickness bolus overlaid on the skin,it can make 90% isdose line involving the skin chest and intramammary lymph but the lung which is irradiated is small. If both skin and intramammary lymph need high dose irradiation perpendicular irradiation by electron beam with bolus as compensator has the significant superiority than X beam tangential irradiation.
Key words breast cancer; radical mastectomy; radiotherapy;dose distribution
目录：
1 材料和方法
2 结 果
3 讨 论
4 结 论
参考文献：
1，Harris JR,echt A Connolly Jet al.Conservative surgery and radiotherapy for early breast cancer[J]. Cancer1990,66:1427.
2，Amalric R et al. Radiation therapy with or without primary limited surgery for operable breast cancer[J].Cancer,1982, 49(1):30.
3，Montague ED. Conservation surgery and radiation therapy in the treatment of operable breast cancer[J]. Cancer,1984,53(3):700.
4，Hellman S et al. Radiation therapy of early carcinoma of the breast without mastectomy[J]. Cancer,1980,46(4):988.
5，胡逸民,等.乳腺癌水平切线技术及剂量计算方法.中国放射肿瘤学[J],1987,1(3):57.
6，谷铣之,殷蔚伯,刘泰福等主编.肿瘤放射治疗学[M].北京,北京医科大学中国协和医科大学联合出版社.1997,807.
7，Carlos A. Perez, Luther W. Brady. Principles and practice of radiation oncology[M]. 1987,753.
作者点评：
根治术后胸壁放疗病人,6 MeV X线切线照射无需楔形板。单纯电子线垂直照射不足取。电子线照射配合组织补偿块的应用,有利于保护肺组织受照,减少放射性肺炎发生几率。对皮肤和内乳淋巴结均需高量照射者,电子线配合组织补偿块的应用,较X线切线照射有明显优势。
