Is it on the scar or mask? I understand, the rubber bolus is to increase the radiation dosage to the area. During CT simulation, a wire is placed along the scar, and bolus is placed along there, but I never had a bolus with IMRT or Proton Therapy, wire marking, yes. From what I understand, cancer tends to return at the surgical line.

I don't know why you have a CT every week, if its part of the trial, monitoring the tumor response or checking the mask alignment and is a CT simulation.

The tongue plug is to keep your tongue still, out of the way, during radiation,

I would ask. Now everyone probably everyone wants to know for sure. Take care, and good luck.