| Popis: |
The optimum dose can be produced by measuring and analysis of the dose distribution from the source. The energy of the source must be maximum for the target cell, and must minimum for the tissues that surround the target cell. In this study, the phantom model has a cylindrical shape with 20 cm radius and 19 cm depth. The calculation is done where photon beam energy is 6 MeV with 3 different radius beam; 0.3 cm, 5 cm, and 15 cm. The verification was done with a model cube film which was arranged by element voxel which made by Mylar and Ag. The results of this simulation shows the difference dose distribution for radius beam 0.5 cm, 3 cm, and 15 cm that is caused by particle density and penumbra effect. And for all beam radiuses, the maximum dose (100%) happens in 1.5–2 mm depth from film model. |
