Comparative Study on the Surface Dose of Some Bolus MaterialsReportar como inadecuado

Comparative Study on the Surface Dose of Some Bolus Materials - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

In order to investigate the possibility of using different materials as bolus in radiotherapy, five samples denoted by S2 - S6 were prepared and analyzed by comparison with one available commercial bolus denoted by S1. Sample S1 was a thermoplastic material from Qfix; S2 was a moldable silicon rubber RTV-530 from Prochima; S3 and S4 were obtained by adding micrometric particles of Al and Cu respectively at the same mass concentration of 5.5%; S5 was another moldable silicon rubber GSP400 from Prochima and S6 was a mixture of GSP400 and micrometric particles of Cu at the mass concentration of 5.5%. The measurements of normalized transmitted dose as a function of sample thickness were performed for all samples S1 - S6 at two values of electron beam energy 6 and 9 MeV produced by a linear accelerator VARIAN 2100SC. The results showed that the maximum of the normalized transmitted dose of manufactured samples S2 - S6 is registered at smaller sample thicknesses than for the analyzed commercial bolus sample S1. The smallest sample thickness corresponding to normalized maximum point dose is obtained for sample S2 RTV-530. Measurements performed for electron beam energy of 6 and 9 MeV have proven the possibility of using the manufactured samples as bolus in radiotherapy.


Bolus Materials, Surface Dose, Build-Up Region, Moldable Silicon Rubber, Electron Beams

Cite this paper

Malaescu, I. , Marin, C. and Spunei, M. 2015 Comparative Study on the Surface Dose of Some Bolus Materials. International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 4, 348-352. doi: 10.4236-ijmpcero.2015.44041.

Autor: Iosif Malaescu1, Catalin Nicolae Marin1*, Marius Spunei1,2



Documentos relacionados