| 伽玛治疗刀的辐射屏蔽设计计算 |
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| 引用本文： | 李星洪,孙建永.伽玛治疗刀的辐射屏蔽设计计算[J].核科学与工程,1998(2). |
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| 作者姓名： | 李星洪 孙建永 |
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| 作者单位： | 北京大学技术物理系 |
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| 摘 要： | 报道了伽玛治疗刀的辐射屏蔽设计计算方法和计算结果。本伽玛治疗刀由３０个每个７．４ＥＢｑ的６０Ｃｏ点源，半球状屏蔽层、侧屏蔽柜和防护门组成，计算了后屏蔽体，侧屏蔽柜和防护门的屏蔽厚度，对泄漏辐射的监则结果表明，本伽玛治疗刀的屏蔽是足够安全的，计算的空气比释动能率的限制值和测量值相符合。
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| 关 键 词： | ~(60)Co源 伽玛治疗刀 屏蔽计算 比释动能率 |
RADIATION SHIELDING DESIGN CALCULATION OF GAMMA KNIFE FOR THERAPY |
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| LI XINGHONG,SUN JIANYONG.RADIATION SHIELDING DESIGN CALCULATION OF GAMMA KNIFE FOR THERAPY[J].Chinese Journal of Nuclear Science and Engineering,1998(2). |
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| Authors: | LI XINGHONG SUN JIANYONG |
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| Affiliation: | Department of Technical Physics Peking University |
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| Abstract: | This paper reportes the method and results of radiation shielding calculation of the gamma knife for therapy which is composed of thirty 60 Co sourses each with 7.4EBq, semi-spherical shield, lateral shielding cupboard and the shielding door. The shielding thicknesses of the back shield, the lateral shielding capboard and the shielding door were calculated. The leakage radiation by test indicates that the shielding is sufficient safety for this Gamma knife and the Kerma rate of control calculated agrees with that by test. |
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| Keywords: | 60 Co sourse Gamma knife radiation shielding Kerma rate |
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