Thank you for your responses…very helpful. Our rule of thumb here is that electron boosts are generally done on free breathing scans. However, there have been a select few cases where the physician specifically requests doing it on breath hold. For those cases, we are trying to develop a workflow to ease the treatments on the machine. It seems like there is a general consensus that it is OK to include an ROI that is not necessarily being directly treated. Thank you all for your help!