Development of optically stimulated luminescent material for two-dimension dosimetry

• Grant number: 12/18687-0
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: March 01, 2013
• End date: February 29, 2016
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Oswaldo Baffa Filho
• Grantee: Luiz Carlos de Oliveira
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

Modern radiotherapy modalities, such as IMRT and proton therapy are techniques that have made it clinically feasible to achieve high tumor conformation to the target tumor while sparing health tissue. However, these modalities rest in a rigorous quality control to guaranty that the exact dose is delivered which is essential for the implementation of these techniques in routine clinical practice. However, this has been hampered by a lack of a suitable detector. Two-dimensional dosimetry using OSL material has been tested, however, a material with suitable dosimetric and luminescent properties for this particular application is still lacking. This project aims the development of a phosphor photostimulable with properties suitable for application in two-dimensional dosimetry with a unique combination of luminescence and dosimetric properties currently not found in any other material. This phosphor may be used to coat plates in a similar fashion as in computerized X-ray plates, allowing a fast reading of the dose distribution with high accuracy, improving, thereby, the radiation therapy treatments through technological innovation. The mapped dose obtained by the plate will be used to compare with the medical plan, helping to verify the quality and identifying problems in dose delivery system, improving radiotherapy treatments.

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

OLIVEIRA, LUIZ C.; BAFFA, OSWALDO. A new luminescent material based on CaB6O10:Pb to detect radiation. Journal of Luminescence, v. 181, p. 171-178, JAN 2017. (12/18687-0)

FRANCA, LEONARDO V. S.; OLIVEIRA, LUIZ C.; BAFFA, OSWALDO. Development of a thermoluminescence and radioluminescence integrated spectrometer. MEASUREMENT, v. 134, p. 492-499, FEB 2019. (12/18687-0)

OLIVEIRA, L. C.; BAFFA, O.. Optically and thermally stimulated luminescence of CaB6O10:Ce,LiCl: Basic properties. Journal of Luminescence, v. 188, p. 180-187, AUG 2017. (12/18687-0)

OLIVEIRA, LUIZ C.; YUKIHARA, EDUARDO G.; BAFFA, OSWALDO. MgO:Li,Ce,Sm as a high-sensitivity material for Optically Stimulated Luminescence dosimetry. SCIENTIFIC REPORTS, v. 6, APR 14 2016. (12/18687-0)