Shielding analysis of the proton therapy facility at China Medical University Hospital: comparison of a simplified approach with Monte Carlo simulations

Author:

Hsieh Ying-I1,Lai Bo-Lun2,Shiau An-Cheng3,Chen Huang-Lung4,Sheu Rong-Jiun1ORCID

Affiliation:

1. Institute of Nuclear Engineering and Science, National Tsing Hua University , 101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, Taiwan , R.O.C

2. Radiation Protection Association , 15F-1, No. 295, Sec. 2 Kuang-Fu Road, Hsinchu 30017, Taiwan , R.O.C

3. China Medical University Hospital , No. 2, Yude Road, North Dist., Taichung City 404332, Taiwan , R.O.C

4. Quantum Radiation Technology Co. Ltd. , 1F., No. 2, Aly. 34, Ln. 65, Sec. 3, Beixin Road, Xindian Dist., New Taipei City 23143, Taiwan , R.O.C

Abstract

Abstract This study comprehensively compared two approaches for analyzing the shielding design of the proton therapy facility at China Medical University Hospital. The first approach essentially involved two approximate models: one for estimating the transmitted radiation through thick shields, and one for estimating radiation streaming at locations near a maze entrance. The second approach relied on Monte Carlo simulations for predicting the radiation field in a complex environment. A total of 22 beam loss scenarios were considered, and dose rates at 32 locations around the facility were estimated using the two approaches. The comparison results demonstrated that the simplified approach proposed in this study can yield fairly accurate or conservative estimates for quickly performing shielding design or dose assessment in a real-world proton therapy facility.

Publisher

Oxford University Press (OUP)

Subject

Public Health, Environmental and Occupational Health,Radiology, Nuclear Medicine and imaging,General Medicine,Radiation,Radiological and Ultrasound Technology

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