TL and OSL dose response of LiF:Mg,Ti and Al2O3:C dosimeters using a PMMA phantom for IMRT technique quality assurance

Author(s)

Matsushima, Luciana C. ^[1] ; Veneziani, Glauco R. ^[1] ; Sakuraba, Roberto K. ^[2] ; Cruz, Jose C. ^[2] ; Campos, Leticia L. ^[1]

Affiliation

^[1] Inst Pesquisas Energet & Nucl IPEN CNEN SP, Gerencia Metrol Radiacoes, BR-05508000 Sao Paulo, SP - Brazil

^[2] HAE, Soc Beneficente Israelita Brasileira, BR-05652000 Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: Applied Radiation and Isotopes; v. 100, p. 7-10, JUN 2015.
• Web of Science Citations: 1

Abstract

The principle of IMRT is to treat a patient from a number of different directions (or continuous arcs) with beams of nonuniform fluences, which have been optimized to deliver a high dose to the target volume and an acceptably low dose to the surrounding normal structures (Khan, 2010). This study intends to provide information to the physicist regarding the application of different dosimeters type, phantoms and analysis technique for Intensity Modulated Radiation Therapy (IMRT) dose distributions evaluation. The measures were performed using dosimeters of LiF:Mg,Ti and Al2O3:C evaluated by techniques of thermoluminescent (TL) and Optically Stimulated Luminescence (OSL). A polymethylmethacrylate (PMMA) phantom with five cavities, two principal target volumes considered like tumours to be treated and other three cavities to measure the scattered radiation dose was developed to carried out the measures. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 10/16437-0 - Characterization and applications of dosimetric materials using optically stimulated luminescence and complementary techniques
• Grantee: Linda Viola Ehlin Caldas
• Support Opportunities: Research Projects - Thematic Grants