Purpose: To investigate the effect on surface dose, as a function of different field sizes and distances from the solid water phantom to transmission detector (D), of using the monolithic silicon detector MP512T in transmission mode.
Methods: The influence of operating the MP512T in transmission mode on the surface dose of a phantom for SSD 100cm was evaluated by using a Markus IC. The MP512T was fixed to an adjustable stand holder and was positioned at different D, ranging from 0.