Characteristics of Bolus Using Silicone Rubber with Silica Composites for Electron Beam Radiotherapy

S. Y. Astuti, H. Sutanto, E. Hidayanto, G. Jaya, Astri Suppa Supratman, Galih Puspa Saraswati
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引用次数: 7

Abstract

Bolus is a material that equal with the tissue and functions to increase the dose radiation in surface area in external radiotherapy, which uses electron beam. In this research, bolus was made using silicone rubber (SR) material, which was mixed with silicacomposites material. The bolus with a dimension of 12 x 12 x 0,5 cm3 was successfully made with a various amount of silica composite (2%, 4%, 6%). Bolus was then characterized using linear accelerator (LINAC) with an electron beam for percentage of surface dose (PSD) and using CT-Scan to measurement relative electron density (RED). The energy of electron beam used in this research was5 and 7 MeV. The result shows that RED value increased with increasing the amount of silica composite with higher RED value amounted to 1.186. PSD value increased with increasing the amount of silica composite, higher PSD value of energy in 5 and 7 MeV amounted 106.82% and 106.82% and 100.34%, respectively. The result certified that the silica composite material can increase the percentage of surface dose on electron beam radiotherapy.
硅橡胶与二氧化硅复合材料用于电子束放疗的特性研究
丸是一种与组织相等的材料,在使用电子束的体外放射治疗中起到增加表面辐射剂量的作用。本研究采用硅橡胶(SR)材料与硅复合材料混合制备微丸。用不同量的二氧化硅复合材料(2%,4%,6%)成功制备了尺寸为12 x 12 x 0,5 cm3的丸体。然后使用直线加速器(LINAC)对Bolus进行表征,电子束测量表面剂量百分比(PSD),并使用ct扫描测量相对电子密度(RED)。本研究使用的电子束能量为5和7兆电子伏。结果表明,随着二氧化硅复合材料用量的增加,材料的RED值逐渐增大,最高可达1.186。PSD值随着二氧化硅复合材料用量的增加而增大,5 MeV和7 MeV能量较高的PSD值分别为106.82%、106.82%和100.34%。结果表明,二氧化硅复合材料可以提高电子束放射治疗的表面剂量百分比。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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