Beam attenuation in energy ranges typically used in radiation therapy is primarily the result of which type of interaction?

Question

Quizplus · Accepted Answer

In the megavoltage range of x-ray energies, common in radiation oncology, the Compton effect is the predominant mode of interaction and thus the attenuation of the beam in any medium is a function, mostly, of the electron density of the medium (number of electrons per cm³).

Beam Attenuation in Energy Ranges Typically Used in Radiation Therapy