RTOG 0319 Plan Scoring

PTV Scoring
No Variation	Minor Variation	Major Variation
Minimum Dose to PTV is at, or above 36.5 Gy, and	95% of PTV is at, or above 36.5 Gy and	Failure to achieve either No Variation or Minor Variation or
Dose heterogeneity <10%. (MaxdosePTV/38.5Gy <1.10)	Dose heterogeneity < 20%. (MaxdosePTV/38.5Gy <1.20)	Any critical normal tissue DVH limit exceeding 5% of the specified value.

Organs at Risk (OAR)

The following are normal tissue limits specified for this study. Any critical normal tissue DVH limit exceeding 5% of the specified value will result in a major variation.

Normal organ
Ipsi-lateral Lung	< 10% of the lung can receive 30% of the prescribed dose.
Contra-lateral Lung	< 10% of the lung should receive 5% of the prescribed dose.
Ipsi-lateral Breast	< 50% of the normal breast to receive > 19.2 Gy and < 25% of the normal breast to receive > 38.5 Gy
Contra-lateral Breast	< 3% of the prescribed dose to any point
Heart (left sided lesions)	The volume of the heart receiving 5% of the prescribed dose (V5) should be < than the V5 for treatment using conventional whole breast radiation with tangential fields
Heart (right sided lesions)	< 5% of the heart should receive 5% of the prescribed dose.
Thyroid	Maximum point dose of 3% of the prescribed dose