Monte-Carlo Simulation

MATLAB-Based Monte-Carlo Calculations Algorithm for Radiation Transport in Medium for Educational Purposes

We have written a code that simulates the transport of photons in a medium. Photons of 50 keV energy are launched in the z-direction towards a phantom as a beam of 8 cm x 8 cm field size with 100 cm SSD. Photon distance to next interaction, interaction type (Photoelectric effect, Compton scattering and Rayleigh scattering), and scattered photon directions (CO & RA) are sampled using the cross section data and random numbers generator.

Fig. 1: Left: Schematic diagram showing the geometry. Right: An image of the dose deposited in the surface plane of the phantom, middle plane, exit plane, and the dose deposited in the z-direction in the center of the beam (y-view).

Fig. 2: Photons interaction and dose deposition during the simulation.