Matsushima Luciana C, Veneziani Glauco R, Sakuraba Roberto K, Cruz José C, Campos Letícia L
Gerência de Metrologia das Radiações - Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP), Av. Prof. Lineu Prestes, 2242, Cidade Universitária, CEP: 05508-000 Sao Paulo, SP, Brazil.
Sociedade Beneficente Israelita Brasileira - Hospital Albert Einstein (HAE), Avenida Albert Einstein, 665, Morumbi, CEP: 05652-000 Sao Paulo, SP, Brazil.
Appl Radiat Isot. 2015 Jun;100:7-10. doi: 10.1016/j.apradiso.2015.02.005. Epub 2015 Feb 7.
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.
调强放射治疗（IMRT）的原理是从多个不同方向（或连续弧形）对患者进行治疗，使用的是不均匀注量的射束，这些射束经过优化，可向靶区输送高剂量，同时向周围正常组织输送可接受的低剂量（汗，2010年）。本研究旨在为物理学家提供有关不同类型剂量计、模体和分析技术在调强放射治疗（IMRT）剂量分布评估中的应用信息。测量使用了LiF:Mg,Ti和Al2O3:C剂量计，通过热释光（TL）和光激励发光（OSL）技术进行评估。制作了一个带有五个腔的聚甲基丙烯酸甲酯（PMMA）模体，其中两个主要靶区被视为要治疗的肿瘤，另外三个腔用于测量散射辐射剂量，以进行测量。
