RTOG 0117 Plan Scoring

PTV Scoring Dose level 2: 74 Gy
No Variation	Minor Variation	Major Variation
Minimum Dose to PTV is at, or above 68.8 Gy, and	95% of PTV1 is at, or above 68.8 Gy and	Failure to achieve either No Variation or Minor Variation
Dose heterogeneity < 10%. (MaxdosePTV/84Gy <1.10)	Dose heterogeneity < 10%. (MaxdosePTV/84Gy <1.10)

Organs at Risk (OAR)

This protocol has specific dose constraints for critical structures that must be followed for patients entered on this protocol.

Lung Constraint	No more than 30% volume shall receive dose that exceeds 20 Gy
Esophagus Constraint	No more than 30% volume shall receive dose that exceeds 55 Gy, and the mean esophageal dose shall be < 34 Gy

The maximum point dose to critical normal structures outside the PTV including unspecified tissue should not exceed the prescription dose. In addition to the dosimetric normal structure limits noted above, the treating physician must carefully consider the tolerance dose/volume to each critical normal structure and unspecified tissue.