Monte Carlo dose calculations for radiotherapy machines: Theratron 780-C teletherapy case study.

The Monte Carlo transport code MCNP was used to simulate the photon beam from a Theratronics 780-C cobalt therapy unit and to calculate some dose-dependent parameters as functions of field size. The simulation process has included the source capsule, collimators (fixed and adjustable), lead in the unit head, and the field sizes as ranged from 5 x 5 to 35 x… CONTINUE READING