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SBRT for re-irradiation
8
• No data on the overall frequency of re-irradiation in clinical
practice
• However, even in a palliative setting of spinal metastases
Re-irradiation is practiced in only few patients:
•
After multiple fraction RT:
8%
•
After Single fraction RT: SF:
20%
Chow JCO 2007
Frequency of Re-irradiation
Most likely explanation:
Risk / fear of severe normal tissue complication