Comparative Study on the Surface Dose of Some Bolus Materials


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.

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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.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Vyas, V., Palmer, L., Mudge, R., Jiang, R., Fleck, A., Schaly, B., Osei, E. and Charland, P. (2013) On Bolus for Megavoltage Photon and Electron Radiation Therapy. Medical Dosimetry, 38, 268-273.
[2] Kudchadker, R.J., Antolak, J.A., Morrison, W.H., Wong, P.F. and Hogstrom, K.R. (2003) Utilization of Custom Electron Bolus in Head and Neck Radiotherapy. Journal of Applied Clinical Medical Physics, 4, 321-333.
[3] Kim, M.M., Kudchadker, R.J., Kanke, J.E., Zhang, S. and Perkins, G.H. (2012) Bolus Electron Conformal Therapy for the Treatment of Recurrent Inflammatory Breast Cancer: A Case Report. Medical Dosimetry, 37, 208-213.
[4] Catalano, G., Canino, P., Cassinotti, M., Pagella, S., Piazzi, V., Re, S., Wizemann, G. and Bucci, E. (2010) Ultrasound Transmission Gel as a Bolus Device for Skin Irradiation of Irregular Surfaces: Technical Note. Radiologia Medica, 115, 975-982.
[5] Nagata, K., Lattimer, J.C. and March, J.S. (2012) The Electron Beam Attenuating Properties of Superflab, Play-Doh, and Wet Gauze, Compared to Plastic Water. Veterinary Radiology & Ultrasound, 53, 96-100.
[6] Humphries, S.M., Boyd, K., Cornish, P. and Newman, F.D. (1996) Comparison of Super Stuff and Paraffin Wax Bolus in Radiation Therapy of Irregular Surfaces. Medical Dosimetry, 21, 155-157.
[7] Huang, K.M., Hsu, C.H., Jeng, S.C., Ting, L.L., Cheng, J.C. and Huang, W.T. (2006) The Application of Aquaplast Thermoplastic as a Bolus Material in the Radiotherapy of a Patient with Classic Kaposi’s Sarcoma at the Lower Extremity. Anticancer Research, 26, 759-762.
[10] Günhan, B., Kemikler, G. and Koca, A. (2003) Determination of Surface Dose and the Effect of Bolus to Surface Dose in Electron Beams. Medical Dosimetry, 28, 193-198.
[11] Spunei, M., Malaescu, I., Mihai, M. and Marin, C.N. (2014) Absorbing Materials with Applications in Radiotherapy and Radioprotection. Radiation Protection Dosimetry, 162, 167-170.
[12] Khan, Y., Villarreal-Barajas, J.E., Udowicz, M., Sinha, R., Muhammad, W., Abbasi, A.N. and Hussain, A. (2013) Clinical and Dosimetric Implications of Air Gaps between Bolus and Skin Surface during Radiation Therapy. Journal of Cancer Therapy, 4, 1251-1255.
[14] Weaver, R.D., Gerbi, B.J. and Dusenbery, K.E. (1998) Evaluation of Eye Shields Made of Tungsten and Aluminum in High-Energy Electron Beams. International Journal of Radiation Oncology Biology Physics, 41, 233-237.
[15] Kinhikar, R.A., Tambe, C.M., Upreti, R.R., Patkar, S., Patil, K. and Deshpande, D.D. (2008) Phantom Dosimetric Study of Nondivergent Aluminum Tissue Compensator Using Ion Chamber, TLD, and Gafchromic Film. Medical Dosimetry, 33, 286-292.

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