Are all prostate cancer patients "fit" for salvage radiotherapy?

Table 1 Constraints recommended in salvage radiotherapy with conventional fractionation

Organ at risk	Constraints
Bladder	V70 < 30%
	V55 < 50%
Rectum	V70 < 20%
	V65 < 25%
	V60 < 35%
	V50 < 50%
Femoral heads	V50 ≤ 10%
	Dmax < 45 Gy
Small bowel	V55 < 5 mL
	V15 < 120 mL

Quantitative analysis of normal tissue effects in the clinic.