4 protocols available
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SBRTRTOG 0631
Single Fraction16 Gy / 1 fx
16 Gy per fractionBED₁₀ = 41.6 Gy
Key Constraints
Spinal CordDmax < 14 Gy (10 Gy to cord)
Cauda EquinaDmax < 16 Gy
EsophagusDmax < 14.5 Gy
SkinDmax < 22 Gy
SBRTSpineSingle fractionMetastases
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SBRTSpine 3fx
Hypofractionated27 Gy / 3 fx
9 Gy per fractionBED₁₀ = 51.3 Gy
Key Constraints
Spinal CordDmax < 21.9 Gy (D0.35cc < 18 Gy)
Cauda EquinaDmax < 25.6 Gy
EsophagusDmax < 25.2 Gy
Sacral PlexusDmax < 25.6 Gy
SBRTSpine3 fractionMetastases
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SBRTSpine 5fx
Hypofractionated30 Gy / 5 fx
6 Gy per fractionBED₁₀ = 48.0 Gy
Key Constraints
Spinal CordDmax < 30 Gy (D0.35cc < 25 Gy)
Cauda EquinaDmax < 32 Gy
EsophagusDmax < 30 Gy
SBRTSpine5 fractionMetastases
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SBRTSpine Re-RT
Re-irradiation20 Gy / 5 fx
4 Gy per fractionBED₁₀ = 28.0 Gy
Key Constraints
Spinal CordCumulative Dmax depends on interval and prior dose
Spinal Cord5fx: Dmax < 22 Gy (if prior 40 Gy, >6mo)
Cauda EquinaSimilar sparing to cord
SBRTSpineRe-irradiationSalvage