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Table 2 Dose volume constraints for anatomic planning and functional planning used for intensity-modulated radiotherapy (IMRT)

From: IMRT treatment plans and functional planning with functional lung imaging from 4D-CT for thoracic cancer patients

   Anatomic planning Functional planning
Structure Constraint type Dose Volume (%) Priority Dose Volume (%) Priority
GTV Maximum dose 105% 0% 50 105% 0% 50
Minimum dose 103% 100% 450 103% 100% 450
CTV Maximum dose 105% 0% 400 105% 0% 400
Minimum dose 102% 100% 400 102% 100% 400
PTV Maximum dose 105% 0% 650 105% 0% 650
Minimum dose 101% 100% 350 101% 100% 350
Total lung Maximum dose 5 Gy 30% 200 5 Gy 30% 200
Maximum dose 10 Gy 25% 200 10 Gy 25% 200
Maximum dose 20 Gy 20% 200 20 Gy 20% 200
Functional lung Maximum dose     5 Gy 30% 250
Maximum dose     10 Gy 25% 250
Maximum dose     20 Gy 20% 250
Spinal cord Maximum dose 40 Gy 0% 300 40 Gy 0% 300
Spinal cord + 5 mm Maximum dose 45 Gy 0% 300 45 Gy 0% 300