Table 3 OAR constraints from institutional policies of the 11 respondents of the survey. For 3 and 5 fraction SABR treatments
Dose constraints | Constraint for 3 fxs | Constraint for 5 fxs | |
|---|---|---|---|
OAR | De novo | De novo | reRT |
Rectum | Dmax < 18–35 Gy V60–90% < 10 - 24Gy | Dmax< 37.5 - 38Gy D2cc < 38Gy V25Gy < =10 cc | Dmax< 25 - 30Gy D2cc < 32Gy |
Bladder | Dmax: <  20–40 Gy V60–90% < 12- 24Gy | Dmax< 37.5–42 Gy V35Gy < 5% | Dmax< 25 - 30Gy D2cc < 36Gy |
Sigmoid | Dmax < 20–33 Gy | Dmax < 39 - 40Gy V25Gy < 20 cc | D2cc < 32Gy Dmax< 25Gy |
Large Bowel | Dmax < 9–33 Gy | Dmax< 38–40 Gy D2cc < 34Gy V25Gy < 20 cc | Dmax< 25 - 30Gy D2cc < 32Gy |
Small Bowel | Dmax: 9–33 Gy < 1 cc > 24Gy V50% < 10Gy | Dmax< 35–39 Gy V25Gy < 5 cc | Dmax< 15 - 25Gy max D2cc < 20Gy |
Skin | V60–95% < 12 - 24Gy |  |  |
Kidney | D200cc <16Gy Dmax <15Gy V50–90% < 10-14Gy | D200cc < 17.5Gy mean < 10–11 Gy V18Gy < 35% | mean < 10Gy |