Table 4. Equivalent dose in 2 Gy fractions results for whole-breast (42.5 Gy/16 fx) and accelerated partial breast irradiation plans (30 Gy/5 fx).

SD: standard deviation; EQD2: equivalent dose in 2 Gy fractions; FB: free breathing; DIBH: deep inspiration breath-hold; Tomo: tomotherapy; APBI: accelerated partial breast irradiation; WH: whole heart; LAD: left anterior descending artery

EQD2 (Gy)	FB (mean ±SD)	DIBH (mean ±SD)	Tomo 1 (mean ±SD)	Tomo 2 (mean ±SD)	APBI (mean ±SD)
WH
Max	49.7 ±1.4	33.3 ±15.4	36.6 ±7.4	27.5 ±10.9	12.0 ±18.3
Mean	2.1 ±0.6	0.7 ±0.2	1.5 ±0.3	0.9 ±0.1	0.3 ±0.2
LAD
Max	48.6 ±1.8	22.6 ±17.0	27.9 ±7.7	18.7 ±8.7	9.7 ±18.0
Mean	25.8 ±7.7	6.3 ±7.7	10.8 ±4.0	4.6 ±1.9	2.9 ±5.7
Left lung
Mean	4.6 ±1.7	4.2 ±1.3	4.0 ±0.9	2.9 ±0.6	1.0 ±0.5
Right breast
Max	0.8 ±0.1	1.2 ±0.6	2.2 ±0.4	14.6 ±4.9	0.2 ±0.2