Retrospective evaluation of a robust hybrid planning technique established for irradiation of breast cancer patients with included mammary internal lymph nodes

Table 1 All dose-volume, biological and geometrical parameters which are evaluated retrospectively for the hybrid patient treatments

Structure	Dose-volume parameter	Biological parameter	Geometric parameter
PTVs	D_min (%), D_mean (%), D_max (%), D_2% (%), D_50% (%), D_95% (%), D_98% (%), V_90% (%), V_95% (%)		volume (cm³), length (cm)
Lung ipsilateral	D_mean (Gy), V_20Gy (%)	NTCP (%) (Semenenko 2008) n = 1, m = 0.35, TD₅₀ = 37.6Gy, \(\alpha /\beta\) = 3	Volume (cm³)
Lung contralateral	D_mean (Gy), V_5Gy (%)		Volume (cm³)
Lung total	D_mean (Gy), V_20Gy (%)	NTCP (%) (Semenenko 2008) n = 1, m = 0.41, TD₅₀ = 29.9Gy, \(\alpha /\beta\) = 3	Volume (cm³)
Heart	D_mean (Gy), V_5Gy (%), V_25Gy (%)	NTCP (%) (Schneider 2017) s = 0.75, \(\gamma\) = 1.29, D50 = 36.5 Gy	Volume (cm³)
Breast contralateral	D_mean (Gy), V_5Gy (%)		Volume (cm³)
Spinal cord	D_max (Gy), D_2% (Gy)		Volume (cm³), length (cm)
Esophagus	D_mean (Gy), D_2% (Gy)	NTCP (%) (Belderbos 2005) n = 0.69, m = 0.36, TD₅₀ = 47 Gy, \(\alpha /\beta\) = 3	Volume (cm³), length (cm)

ISSN: 1748-717X