If vertebral body pain is not controlled with a single 8 Gy fraction, what non-SBRT dose scheme would you consider for re-treatment?

My recommendation regarding a second course of radiation after a single fraction of 8 Gy depends on…

a) Did the 8 Gy work at all? My usual practice has been to recommend repeat radiation therapy only if the first course helped. You could argue that maybe 8 Gy “just wasn’t enough” but many studies sh...

If a/b is about 3 for cord, then the BED to cord is:

8 Gy in 1 = 29.3

20 Gy in 5 = 46.7

30 Gy in 10 = 60

Even taking time into consideration, re-treating after 8 in 1 is very safe and if you would do it after 30 in 10, you can safely do after 8 in 1 (as the Chow study mentioned above, notes).

Part of w...

I prefer 2000 in 5 fx.