2017_SBRT_Course Book
Definition of the OAR spinal cord Conventional CT CT Myelography T2 weigted MRI
No consensus on planning organ at risk “spinal cord”: • Spinal cord • Spinal cord + 1-2mm • Thecal sack (cord + 0.5 – 1.5mm) • Spinal canal
Use a planning OARs with some margin
/ ESTRO SBRT 2017 - Matthias Guckenberger
07.09.17
27
Dose and fractionation
Lovelock IJROBP 2009
Yamada IJROBP 2008
1 x 15.1Gy
1 x 24Gy
Ø Dose effect relationship in single fraction SRS
/ ESTRO SBRT 2017 - Matthias Guckenberger
07.09.17
28
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