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Table 1 Critical organ dose-volume limits for stereotactic ablative radiotherapy to 50 Gy given in 4 fractions

From: Clinical outcome and predictors of survival and pneumonitis after stereotactic ablative radiotherapy for stage I non-small cell lung cancer

Organ, Limit, and Volume Maximum dose limits
Esophagus
Dmax 35 Gy
≤ 1 cm3 30 Gy
≤ 5 cm3 20 Gy
Brachial plexus
Dmax 40 Gy
≤ 1 cm3 35 Gy
≤ 5 cm3 30 Gy
Trachea
Dmax 45 Gy
≤ 1 cm3 35 Gy
≤ 5 cm3 30 Gy
Main bronchus and bronchial tree
≤ 1 cm3 40 Gy
≤ 5 cm3 35 Gy
Heart
≤ 1 cm3 40 Gy
≤ 5 cm3 35 Gy
Total lung volume*
V20 Gy(RBE) < 20% of total lung volume
V10Gy(RBE) < 30% of total lung volume
V5Gy(RBE) < 40% of total lung volume
Major vessels
Dmax 45 Gy
≤ 1 cm3 40 Gy
≤ 5 cm3 35 Gy
Skin
≤ 1 cm3 35 Gy
≤ 5 cm3 30 Gy
Chest wall
≤ 10 cm3 45 Gy
≤ 30 cm3 35 Gy
Spinal cord
Dmax 25 Gy
≤ 5 cm3 20 Gy
  1. *Defined as right plus left lungs minus the gross tumor volume.