Dumb question about something basic in rad onc. I know for certain skin cancers etc. or breast boosts we use electrons. I keep reading in textbooks that these require skin collimation. What are they referring to? Isn't the cerrobend block placed in the treatment head?
For that matter why can't you just block with MLCs like you do for a field edge in photons?
And what is this difference with orthovoltage? In orthovoltage, you have the cone that basically comes right next to the skin and you don't need further skin collimation?
Thanks.
For that matter why can't you just block with MLCs like you do for a field edge in photons?
And what is this difference with orthovoltage? In orthovoltage, you have the cone that basically comes right next to the skin and you don't need further skin collimation?
Thanks.