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Table 2 Dose constrains

From: Partial breast irradiation with CyberKnife after breast conserving surgery: a pilot study in early breast cancer

Organ at risk (OAR)

Volume

Dose (Gy)

Ipsi-lateral lung

< 10%

30% of the prescribed dose

Contra-lateral lung

< 10%

5% of the prescribed dose

Heart (right breast)

< 5%

5% of the prescribed dose

Heart (left breast)

< 40%

5% of the prescribed dose

Thyroid

Maximum point dose

≤3% of the prescribed dose

Skin

<10cm3

36.5 Gy

Max point

39.5 Gy

Ipsi-lateral breast

(PTV excluded)

< 40%

< 20%

≥ 50% of the prescribed dose

≥ 100% of the prescribed dose

Contra-lateral breast

100%

< 3% of the prescribed dose

  1. PTV Planning Target Volume