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Table 2 Treatment parameters

From: Analysis of equivalent uniform dose (EUD) and conventional radiation treatment parameters after primary and re-irradiation of malignant glioma

  RT 1 Re-RT
Target structure N1 Median1 Maximum1 N2 Median2 Maximum2
EUD (optic chiasm) [Gy] 25 40.5 54.3 58 7.4 27.4
Maximum dose (optic chiasm) [Gy] 25 49.5 55.9 58 9.8 27.7
EUD (brainstem) [Gy] 27 42.0 55.4 58 15.1 43.0
Maximum dose (brainstem) [Gy] 29 53.2 61.7 58 22.3 50.1
EUD (left optic nerve) [Gy] 26 18.8 50.9 58 2.0 23.1
Maximum dose (left optic nerve) [Gy] 26 25.0 55.3 58 2.2 27.8
EUD (right optic nerve) [Gy] 23 18.2 53.0 58 3.0 24.5
Maximum dose (right optic nerve) [Gy] 24 18.6 55.2 58 3.2 25.2
EUD (brain) [Gy] 12 45.0 50.1 52 27.1 32.5
Mean dose (brain) [Gy] 12 25.0 40.3 55 12.2 20.2
Maximum dose (brain) [Gy] 12 63.4 64.4 55 37.6 50.4
Volume GTV [Gy] 21 36.6 423.4 51 33.9 157.9
Spherical radius GTV [cm] 21 2.1 4.7 51 2.0 3.4
EUD GTV [Gy] 19 60.1 60.7 50 36.1 47.3
EUD PTV [Gy] 22 59.3 61.9 50 33.7 43.9
  1. Various parameters on re-irradiation for the patient population are shown.