Guidelines
Copyright ©The Author(s) 2022.
World J Clin Oncol. Apr 24, 2022; 13(4): 237-266
Published online Apr 24, 2022. doi: 10.5306/wjco.v13.i4.237
Table 9 The constraints to organs at risk s in stereotactic body radiotherapy based on the studies
Organ
Single fraction (30-34 Gy)
Three fractions (54-60 Gy)
Four fractions (48 Gy)
Five fractions (50-60 Gy)
Eight fractions (60 Gy)
Ref.
Optimal
Mandatory
Optimal
Mandatory
Optimal
Mandatory
Optimal
Mandatory
Optimal
Mandatory
Brachial plexus14 Gy < 3 cc17.5 Gy ≤ 0.035 cc20.4 Gy < 3cc24 Gy ≤ 0.035 cc27 Gy < 3 cc30.5 Gy ≤ 0.035 ccBenedict et al[139], Grimm et al[140]
14.4 Gy < 3cc17.5 Gy Dmax22.5 Gy < 3 cc24 Gy30 Gy < 3 cc32 GyBezjak et al[43]
23.6 Gy < 3 cc, 30 Gy < 10 cc, 35 Gy < 1 cc27.2 Gy Dmax, 40 Gy DmaxVidetic et al[31], Chang et al[146]
24 Gy ≤ 0.5 cc26 Gy ≤ 0.5 cc27 Gy ≤ 0.5 cc29 Gy ≤ 0.5 cc27 Gy ≤ 0.5 cc38 Gy ≤ 0.5 ccHanna et al[141]
Spinal cord10 Gy < 0.35 cc, 7 Gy < 1.2 cc14 Gy ≤ 0.035 cc14 Gy < 0.35 cc, 12.3 Gy < 1.2 cc18 Gy ≤ 0.035 cc23 Gy < 0.35 cc, 14.5 Gy < 1.2 cc30 Gy ≤ 0.035 ccBenedict et al[139]
7 Gy < 1.2 cc7 Gy < 1.2 cc18 Gy < 0.25 cc, 11.1 Gy < 1.2 cc18 Gy20.8 Gy < 0.35 cc, 13.6 Gy < 1.2 cc26 Gy Dmax22.5 Gy < 0.25 cc, 13.5 Gy < 1.2 cc, 13.5 Gy < 0.5 ccBezjak et al[43], Videtic et al[31], Timmerman et al[36]
18 Gy < 0.1 cc21.9 Gy < 0.1 cc23 Gy < 0.1 cc30 Gy < 0.1 cc25 Gy < 0.1 cc32 Gy < 0.1 ccHanna et al[141]
Esophagus11.9 Gy < 5 cc, 14.5 Gy < 5 cc15.4 Gy Dmax17.7 Gy < 5 cc25.2 Gy19.5 Gy < 5 cc35 GyVidetic et al[31]
21 Gy < 5 cc27 Gy18.8 Gy < 5 cc, 30 Gy < 10 cc, 35 Gy < 1 cc30 Gy Dmax, 50 Gy Dmax27.5 Gy < 5 cc35 Gy, 52.5 GyTimmerman et al[36], Bezjak et al[43], Chang et al[146]
25.2 Gy < 0.5 cc32 Gy < 0.5 cc34 Gy < 0.5 cc40 Gy < 0.5 ccHanna et al[141]
Heart16 Gy < 15 cc, 16 Gy < 15 cc22 Gy Dmax, 22 Gy Dmax24 Gy < 15 cc, 24 Gy < 15 cc30 Gy Dmax, 30 Gy Dmax28 Gy < 15 cc, 35 Gy < 10 cc, 40 Gy < 1 cc34 Gy Dmax, 50 Gy Dmax32 Gy < 15 cc, 32 Gy < 15 cc38 Gy Dmax, 38 Gy Dmax, 52.5 Gy DmaxBenedict et al[139], Timmerman et al[36], Bezjak et al[43], Chang et al[146]
24 Gy < 0.5 cc26 Gy < 0.5 cc27 Gy < 0.5 cc29 Gy < 0.5 cc50 Gy < 0.5 cc60 GyHanna et al[141]
Great Vessels31 Gy < 10 cc37 Gy Dmax39 Gy < 10 cc45 Gy Dmax47 Gy < 10 cc53 Gy DmaxBenedict et al[139]
31 Gy < 10 cc37 Gy < 0.035 cc39 Gy < 10 cc45 Gy Dmax43 Gy < 10 cc, 35 Gy < 10 cc, 40 Gy < 1 cc49 Gy Dmax47 Gy < 10 cc52.5 Gy DmaxBezjak et al[43], Videtic et al[31], Chang et al[146]
45 Gy < 0.5 cc53 Gy < 5 ccHanna et al[141]
Trachea and bronchus10.5 Gy < 4 cc20.2 Gy Dmax15 Gy < 4 cc30 Gy Dmax16.5 Gy < 4 cc40 Gy DmaxBenedict et al[139]
8.8 Gy < 4 cc, 10.5 Gy < 4 cc22 Gy Dmax, 20.2 Gy < 0.035 cc21 Gy < 5 cc30 Gy Dmax30 Gy < 10 cc, 35 Gy < 1 cc, 15.6 Gy < 4 cc50 Gy Dmax, 34.8 Gy DmaxBezjak et al[43], Videtic et al[31], Timmerman et al[36], Chang et al[146]
30 Gy < 0.5 cc32 Gy < 0.5 cc32 Gy < 0.5 cc35 Gy < 0.5 cc32 Gy < 0.5 cc44 Gy < 0.5 ccHanna et al[141]
Skin23 Gy < 10 cc, 14.4 Gy < 10 cc26 Gy Dmax, 16 Gy Dmax30 Gy < 10 cc, 22.5 Gy < 10 cc33 Gy Dmax, 24 Gy Dmax35 Gy < 10 cc, 40 Gy < 1 cc, 33.2 Gy < 10 cc36 Gy Dmax36.5 Gy < 10 cc, 30 Gy < 10 cc39.5 Gy Dmax, 32 Gy DmaxBenedict et al[139], Chang et al[146], Videtic et al[31]
Chest wall22 Gy < 1 cc30 Gy Dmax28.8 Gy < 1 cc, 30 Gy < 30 cc36.9 Gy Dmax35 Gy < 1 cc43 Gy DmaxBenedict et al[139]
22 Gy < 1 cc30 Gy Dmax30 Gy < 30 cc, 50 Gy < 2.3 cc35 Gy < 10 cc, 32 Gy < 1 cc40 Gy Dmax30 Gy < 30 cc, 50 Gy < 2.3 cc, 60 Gy < 1.4 ccVidetic et al[31], Kong et al[145], Liao et al[147]
37 Gy < 0.5 cc, 30 Gy < 30 cc39 Gy < 0.5 cc, 32 Gy < 30 cc39 Gy < 0.5 cc, 35 Gy < 30 ccHanna et al[141], Dunlap et al[142], Ma et al[143]
40 Gy < 5 cc, 60 Gy < 0.5 ccV30 < 30 cc, V30 < 70 ccHerth et al[19]
Normal lungsMinimal critical volume under threshold. 1500 cc, 1000 ccThreshold dose: 7 Gy, 7.4 GyThreshold dose: 11.6 Gy, 12.4 GyThreshold dose: 12.5 Gy, 13.5 GyBenedict et al[139]
Minimal critical volume under threshold. 1500 cc, 1000 cc, 1500 cc, 1000 cc7 Gy, 7.4 Gy20 Gy < 10%, 20 Gy < 15%10.5 Gy, 11.4 Gy11.6 Gy, 12.4 Gy, 20 Gy < 20%, 30 Gy < 10%12.5 Gy, 13.5 Gy, 20 Gy < 20%, 30 Gy < 10%Bezjak et al[43], Videtic et al[31], Chang et al[146]
V20 < 10%, V12.5 < 15%V20 < 10%, V12.5 < 15%V20 < 10%, V12.5 < 15%Hanna et al[141]
Treatment on lesion: V20 < 10%; treatment 2-3 lesions: V20 < 12.5% (optimal); V20 < 15% (acceptable); V20 < 20% (selected cases) 3-8 fractions on alternating days. If the lesions are not included in the treatment field, alternate the treatment days for the different lesionsHanna et al[141]
In 3-5 fraction Dmean ≤ 8 Gy and V20 ≤ 10%-15%Kong et al[145]