Breast Conserving Treatment for Breast Cancer: Dosimetric Comparison of Sequential versus Simultaneous Integrated Photon Boost

Figure 1

Example of dose distribution. Legend: red: 107% of total dose ((a) 70.62 Gy, (b) 64.2 Gy), orange: 100% of total dose ((a) 66 Gy, (b) 60 Gy), yellow: 95% of total dose ((a) 62.7 Gy, (b) 57 Gy), dark green: 55 Gy, middle green: 50 Gy, light green: 47.5 Gy, blue: 40 Gy, pink: 30 Gy, old pink: 20 Gy, purple: 5 Gy.

(a) Sequential boost: 25 × 2 Gy + 8 × 2 Gy (total dose: 66 Gy)

(b) SIB with CMS XIO: 25 × 2 à 2.4 Gy (total dose: 60 Gy)