@abinoone Follow your RO’s advice to the letter: empty rectum/full bladder and you will be fine.
All the RO techs at Sloan reinforced that mantra every single day. One even commented that the only reports she ever got about unfavorable SE’s were related to patients who did not follow the protocol closely enough.
And remember, they will not proceed with the treatment that day if your insides (as measured by a pre-op conebeam CT scan) do not match your simulation profile. Be absolutely sure that your team is going to follow this protocol.
Phil