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Table 2 Institutional planning constraints for concurrent chemoradiation to the thorax

From: The impact of induction chemotherapy on the dosimetric parameters of subsequent radiotherapy: an investigation of 30 consecutive patients with locally-advanced non-small cell lung cancer and modern radiation planning techniques

Structure Dose constraint
Lung  
V5 <65%
V20 <35%
Mean ≤20 Gy
Heart  
V50 <50%
Mean 26 Gy
Esophagus  
V55 <50%
Mean ≤34 Gy
Spinal cord  
Maximum 45 Gy
PTV  
PTV95 goal ≥95%