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Evaluation of Shielding Design of the HDR Brachytherapy Treatment Room at INMP, BAEC, Bangladesh: A Theoretical Calculation |
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PP: 35-37 |
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doi:10.18576/jrna/080106
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Author(s) |
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M. S. Sultana,
A. Rahim,
M. M. Parvej,
M. A. Hasnat,
S. Alim,
M. M. Rahman,
M. M. Ahasan,
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Abstract |
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| Shielding is important for any type of use of radioactive sources. In HDR (high dose rate) brachytherapy facility, a radioactive source is used to treat the patient. Therefore, shielding design is necessary for brachytherapy treatment room to protect the employees and public from the radiation effect. Brachytherapy treatment room should have sufficient shielding to limit the radiation dose received by other patients, nursing staff, employees and general public present in the surrounding area to permissible levels. In this study, we evaluate the shielding design by manual calculation. Here, we calculate shielding thickness with different positions of the source, so that the dose outside the shielding of the constructed brachytherapy treatment room will not exceed the design (dose) limit. Applying several combinations, we finalize the position of the source. The main objective of this study is to investigate whether our brachytherapy room provides adequate protection for human health. In this study, we calculated the shielding thickness for radiobiological protection for a single Co-60 brachytherapy source of activity 2 Ci. Here, we also define an area for the source for which the theoretical dose rate outside the treatment room will be less than 0.3 mSv/year. |
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