Table 3.

The range of mean and median doses to contralateral breast and critical organs in three techniques in 10 consecutive patients with early-stage breast cancer treated with breast-conserving therapy.

Critical organs	Radiotherapy techniques dose [Gy] (range/median)
	3D + electron boost	IMRT + electron boost	IMRT-SIB
Contralateral breast	0.1–1.8	0.0–1.4	0.0–1.5
	0.4	0.3	0.2
Heart	0.4–43.1	0.3–35.9	0.3–35.0
	1.7	1.6	1.6
LAD	0.7–7.4	0.6–8.0	0.7–7.6
	2.7	3.0	2.8
Lung on irradiated side	0.3–50.1	0.1–49.4	0.1–44.5
	5.6	5.0	4.9
V 20 value (for lung on irradiated side)	9–14%	4–8%	5–7%
	10.7%	6%	5.7%
V 20 value (for both lungs)	4–6%	2–3%	1–3%
	5%	2.3%	2%