Table 1.
Constraint data and coverage metrics
| Organ at risk | Constraint | No. of PI constraint violations | PI mean (range) | PA mean (range) |
|---|---|---|---|---|
| Trachea | V50Gy <0.20cc | 0 | 0.00 (0.00-0.00) | 0.00 (0.00-0.00) |
| Proximal bronchial tree | V50Gy <0.20cc | 22 | 0.74 (0.00-3.85) | 0.08 (0.00 -0.92) |
| Great vessels | V47Gy <10.00cc | 3 | 4.65 (0.00-14.79) | 2.43 (0.05-6.98) |
| Heart | V32Gy <15.00cc | 0 | 1.31 (0.00-4.63) | 0.86 (0.00-3.61) |
| Esophagus | V32Gy <0.50cc | 6 | 0.19 (0.00-1.88) | 0.01 (0.00-0.10) |
| Stomach | V33Gy <0.50cc | 0 | 0.00 (0.00-0.00) | 0.00 (0.00-0.00) |
| Brachial plexus | V27Gy <3.00cc | 0 | 0.02 (0.00-0.42) | 0.01 (0.00-0.28) |
| Spinal cord | V25Gy <1.00cc | 0 | 0.02 (0.00-0.35) | 0.00 (0.00-0.01) |
| Chest wall* | V30Gy <30.00cc | 1 | 13.31 (0.00-45.05) | 11.64 (0.00-29.62) |
| Uninvolved lung* | CV12.5Gy <1500.00cc CV13.5Gy <1000.00cc |
0 | 488.04 (277.75-992.44) | 461.25 (277.75-992.44) |
| Target volume metric | Goal | PI mean (range) | PA mean (range) | |
| PTV V100% (%) | N/A | 80.67 (42.80-94.30) | 80.43 (40.00-96.60) | |
| PTV V50Gy (%) | N/A | 86.96 (53.50-97.60) | 87.16 (53.00-98.90) | |
| PTVopt D95% (Gy) | >95% Rx (10.45 Gy per fraction) | 10.86 (8.20-11.61) | 11.43 (10.77-11.82) | |
| GTV V100% (%) | N/A | 91.29 (65.60-99.90) | 90.67 (63.40-100.00) | |
| GTV V50Gy (%) | N/A | 95.54 (76.50-100.00) | 95.98 (79.10-100.00) | |
| Planning metric | Goal | PI mean (range) | PA mean (range) | |
| PTV CI | N/A | 1.02 (0.48-1.26) | 0.95 (0.42-1.26) | |
| PTVopt CI | N/A | 1.33 (1.13-1.75) | 1.24 (1.00-1.37) | |
| PTV R50 | N/A | 3.85 (1.86-5.26) | 3.54 (1.72-4.47) | |
| PTVopt R50 | N/A | 5.09 (4.38-7.57) | 4.67 (4.24-5.29) | |
Abbreviations: CI = conformality index; CV = critical volume; GTV = gross total volume; N/A = not applicable; OAR = organ at risk; PA = adapted plan; PI = patient's initial anatomy at CT simulation; PTV = planning target volume.
OAR constraint data as well as coverage and planning metrics are demonstrated.
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Indicates an OAR constraint that is not a hard constraint, and therefore isn't a primary driver of tumor coverage.