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How Much Technology Do We Need for SBRT?
Challenges
IGRT Offline Adaptive RT Online Adaptive RT
Change in daily target position
Yes
Systematic target shape change
No
Yes
Systematic OAR shape change
No
Yes
Daily target shape change
No No
Yes
Daily OAR shape change
No No
Yes
Adapted from Lei Dong
Sparing of organs at risk by online adaptation
•
Important for dose-limited treatments