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Year : 2015  |  Volume : 38  |  Issue : 4  |  Page : 151-153

Attenuation of 60Co gamma rays by barium acrylic resin composite shields

1 Department of Oral Pathology and Microbiology, Yenepoya Dental College, Mangalore, India
2 Yenepoya Research Centre, Yenepoya University, Mangalore, India
3 Medical Physics, Radiological Physics, Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India

Correspondence Address:
Jagadish Kudkuli
Junior Research Fellow, Yenepoya Research Centre, Yenepoya University, University Road, Deralakatte, Mangalore - 575 018, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0464.176157

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Oral squamous cell carcinoma is the sixth most common cancer reported globally, with an annual incidence of over 300,000 cases, of which 62% arise in developing countries. Radiation therapy is a treatment modality that uses ionizing radiation as a therapeutic agent. It is widely employed in the treatment of head and neck cancer, as a primary therapy coupled with surgical procedure and chemotherapy or as a palliative treatment for advanced tumors. However, radiotherapy can cause a series of complications such as xerostomia, mucositis, osteoradionecrosis, and radiation caries. Composite circular disc containing different ratios of acrylic and barium sulfate (BaSO4) were made in-house. The purpose of this study was to evaluate the percentage attenuation from these composite shields in 60 Co gamma rays. A maximum of 8% radiation attenuation was achieved using 1:4 ratio of acrylic-BaSO4 composite shields. The study proposes BaSO4 as one of the compounds in combination with acrylic resin or any other thermoplastic substances for making biocompatible radiation attenuating devices.

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