Table 1.

Factors considered in offering re-irradiation as a treatment option

	Responder number/(%)
Factor	Extremely relevant	Very relevant	Somewhat relevant	Not at all relevant
Tumor volume	5 (38)	7 (54)	1 (8)	0 (0)
Time since previous radiation therapy	6 (46)	6 (46)	1 (8)	0 (0)
Dose previously administered to organs at risk in the field	6 (46)	4 (31)	3 (23)	0 (0)
Patient performance status	5 (38)	4 (31)	4 (31)	0 (0)
Patient age	0 (0)	8 (62)	4 (31)	1 (8)
Original histology	1 (8)	4 (31)	6 (46)	2 (15)
Number of lines of previous treatment	0 (0)	5 (38)	6 (46)	2 (15)
Previous use of Bevacizumab or Bevacizumab failure	1 (8)	4 (31)	6 (46)	2 (15)
Available tissue documentation of tumor progression	1 (8)	3 (23)	7 (54)	2 (15)
Perfusion characteristics on diffusion weighted imaging (DWI)	0 (0)	6 (46)	7 (54)	0 (0)
PET avidity of the lesion	0 (0)	4 (31)	3 (23)	6 (46)