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| Establishing the Estimation Model on Radiation Level at the Ambience of 60Co Radiotherapy Treatment Room Based on NCRP REPORT No.151 |
| YANG Hai-you, LIU Li-ping, LIANG Yue-qin, et al |
| Biomedical Analysis Center, Academy of Military Medical Sciences, Beijing 100850 China |
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Abstract Objective To establish the estimation model to evaluate the radiation level at the ambience of 60Co radiotherapy treatment room.Methods The estimation model derives from NCRP REPORT No.151-"Structural Shielding Design and Evaluation for Megavoltage X-and Gamma-Ray Radiotherapy Facilities" by making appropriate adjustment,which presents the calculation methods on radiation level at the ambience of megavoltage medical electron linear accelerator treatment room.Results The application scope of estimation model from NCRP REPORT No.151 is extended to γ-radiotherapy facilities,and it can be regarded as a new model for calculating the radiation level at the ambience of 60Co radiotherapy treatment room.Conclusion The estimation model has certain reference value to evaluate the radiation level at the ambience of 60Co radiotherapy treatment room.
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Received: 05 December 2008
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