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Table 6 Spinal cord tolerance doses

From: Clinical practice of image-guided spine radiosurgery - results from an international research consortium

   Tolerance doses Spinal Cord
  Dosimetric parameter Single fraction 3 fractions 5 fractions 10 fractions
UHW Dmax to 0.1 cc    23.75 Gy 35 Gy
UPMC Dmax 11 Gy 18 Gy   
UofT Dmax 10 Gy 17.5 Gy 22 Gy  
UVAMC D10 10 Gy 15 Gy 20 Gy  
RSMC 2 cc   18 Gy   
   Tolerance doses Cauda equina
  Dosimetric parameter Single fraction 3 fractions 5 fractions 10 fractions
UHW Dmax to 0.1 cc    25 Gy 37.5 Gy
UPMC Dmax 12 Gy 18 Gy   
UofT Dmax 12 Gy 18 Gy 23 Gy  
UVAMC D10 12 Gy 15 Gy 20 Gy  
RSMC 2 cc   24 Gy