Table 3.
Dosimetric outcomes of stereotactic partial breast irradiation.
| Dosimetric parameters | Median (interquartile range) |
|---|---|
| PTV V95% | 97.8% (96.2–98.8%) |
| PTV Dmax | 105.3% (104.2–106.4%) |
| Ipsilateral breast V50% | 35.5% (28.3–39.8%) |
| Contralateral breast Dmax | 0.8 Gy (0.6–1.1 Gy) |
| Ipsilateral lung V20Gy | 0.1% (0.0–0.3%) |
| Ipsilateral lung V10Gy | 2.2% (1.5–3.0%) |
| Contralateral lung V1.5Gy | 0.0% (0.0–0.0%) |
| Heart mean dose (left-sided lesions) | 0.7 Gy (0.5–1.2 Gy) |
| Heart mean dose (right-sided lesions) | 0.4 Gy (0.3–0.5 Gy) |
| Skin Dmax | 26.6 Gy (25.5–28.0 Gy) |
| Chest wall Dmax | 29.8 Gy (29.2–30.5 Gy) |
Vx%, percentage of volume receiving X% of the prescribed dose; VxGy, percentage of volume receiving X Gy; Dmax, maximum point dose.