We aimed to describe long-term outcomes after stereotactic magnetic resonance (MR)-guided online adaptive radiotherapy (SMART) as an innovative treatment of ULT.


 We analyzed 36 patients that received SMART to 40 tumors between 02/2020 - 08/2021 inside prospective databases.  Our small series supports SMART as potentially effective treatment of ULT.  SMART with careful fractionation could reduce severe complications, but treatment of ULT remains a high-risk procedure and needs careful benefit-risk-assessment.
SMART
We analyzed 36 patients that received SMART to 40 tumors between 02/2020 - 08/2021 inside prospective databases. 
prospective databases