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Table 3 OAR constraints from institutional policies of the 11 respondents of the survey. For 3 and 5 fraction SABR treatments

From: Survey of current practices from an international task force for gynecological stereotactic ablative radiotherapy

Dose constraintsConstraint for 3 fxsConstraint for 5 fxs
OARDe novoDe novoreRT
RectumDmax < 18–35 Gy
V60–90% < 10 - 24Gy
Dmax< 37.5 - 38Gy
D2cc < 38Gy
V25Gy < =10 cc
Dmax< 25 - 30Gy
D2cc < 32Gy
BladderDmax: <  20–40 Gy
V60–90% < 12- 24Gy
Dmax< 37.5–42 Gy
V35Gy < 5%
Dmax< 25 - 30Gy
D2cc < 36Gy
SigmoidDmax < 20–33 GyDmax < 39 - 40Gy
V25Gy < 20 cc
D2cc < 32Gy
Dmax< 25Gy
Large BowelDmax < 9–33 GyDmax< 38–40 Gy
D2cc < 34Gy
V25Gy < 20 cc
Dmax< 25 - 30Gy
D2cc < 32Gy
Small BowelDmax: 9–33 Gy
< 1 cc > 24Gy
V50% < 10Gy
Dmax< 35–39 Gy
V25Gy < 5 cc
Dmax< 15 - 25Gy
max
D2cc < 20Gy
SkinV60–95% < 12 - 24Gy  
KidneyD200cc <16Gy
Dmax <15Gy
V50–90% < 10-14Gy
D200cc < 17.5Gy
mean < 10–11 Gy
V18Gy < 35%
mean < 10Gy