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Table 1 Risk evaluation

From: Re-irradiation of spinal column metastases by IMRT: impact of setup errors on the dose distribution

  Absolute error 3D vector Max dose D01ccm BED (Gy2) Risk factor
Translation (mm) Rotation (°) % Gy Max dose Total  
Patient 1 10.2 3.3 86.7 20.8 56.8 131.8 2
Patient 2 5.6 3.3 85.3 20.5 55.4 130.4 2
Patient 3 4.2 2.8 78.6 18.9 48.5 123.5 1
Patient 4 10.0 3.7 94.8 22.8 65.9 140.9 3
Patient 5 6.1 3.1 88.4 21.2 58.7 133.7 2
Patient 6 5.4 3.0 94.2 22.6 65.2 140.2 3
Patient 7 5.9 2.1 82.9 19.9 52.9 127.9 1
Patient 8 2.8 2.1 78.1 18.7 48.0 123.0 1
Patient 9 4.3 2.0 79.9 19.2 49.8 124.8 1
Patient 10 6.2 1.7 82.2 19.7 52.2 127.2 1
mean value 6.1 2.7      
  1. Absolute error, maximum dose, BED and risk factor for each patient in case HexaPOD™ correction is not performed.