Abstract
In years the bolus is used as human tissue compensator in treatments of superficial tumors using photons and electrons in the radiotherapy. In order to obtain a low cost and noncommercial bolus, it is proposed in this work to find an optimized bolus recipe composed of: water, bidistilled glycerin, gelatin and formol. It was manufactured 14 samples and it was evaluated their mass densities, homogeneity and malleability which M and N samples was classified for dosimetric analyses. The percentage depth dose (PDD) curves of M and N samples were measured and compared to the PTW RW3 solid water PDD curve for three energies, 6 MV, 6 MeV and 18 MeV. The PDDs comparisons results showed good agreement and differences smaller than 6% in the percentage depth values for depths smaller than 1,5 cm, except to 6 MeV electron energy which the sample N had difference of 17%. The M sample presented better results for the three measured energies and it was defined as the best recipe to a bolus between the analyzed samples in this work.
Highlights
Radiotherapy is an efficient method for the destruction of cells, using ionizing radiation.can be used for oncological treatments [1,2]
The radiation dose prescribed by the radio oncologist doctor must be delivered with precision [3]
In this study different bolus samples were analyzed, which were manufactured by varying the proportions of part of their components: water and bi-distilled glycerin and
Summary
Radiotherapy is an efficient method for the destruction of cells, using ionizing radiation.can be used for oncological treatments [1,2]. The radiation dose prescribed by the radio oncologist doctor must be delivered with precision [3]. For this diagnostic imaging techniques, as computed tomography (CT), magnetic resonance (MR), ultrasound and positron emission tomography (PET) assist the radio oncologist in locating the target volume. Tumors relatively shallow or moderately deep at the skin distance, as in the cases of head and neck, breast and body ends, x-ray units, with low energy megavoltage beam, are used (e.g. 60Co, 4 MV or MV). For treatment of deep tumors in abdomens and pelvis it could be medium and high energy (between 10 MV to 25 MV). For superficial tumors, at most 5 cm deep, is used beams of charge particles, like electrons with energy between 4 MeV to 20 MeV [2]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
