When you say "best approach" for offline review, my mind wonders:
1) Does he mean "Should I do or not do offline review; what is the best approach?"
2) Does he mean "What is the randomized, Level 1 evidence say is the best approach for offline review?"
3) Does he mean "What do rad oncs who are smarter than me say is the best approach for offline review?"
4) Does he mean "I have never done IGRT in my life... what is the best approach so I can get started?"