Impact of patient and treatment characteristics on heart and lung dose in adjuvant radiotherapy for left-sided breast cancer

Table 2 Patient characteristics and organ at risk doses

		Median	Min	5th percentile	95th percentile	Max
Age at time of radiotherapy		59	28	39	80	91
Patient anatomy
	Heart volume	495.6 cm³	271.6 cm³	353.6 cm³	696.9 cm³	1031.7 cm³
	Lung volume	2738.6 cm³	1591.3 cm³	1991.5 cm³	4155.6 cm³	5544.5 cm³
	Body mass index	25.3 kg/m²	16.3 kg/m²	19.1 kg/m²	36.5 kg/m²	54.7 kg/m²
Organ at risk doses
	Heart mean dose (Gy)	3.7 Gy	0.4 Gy	1.1 Gy	7.4 Gy	14.8 Gy
	Heart V_20Gy (%)	3.1%	0.0%	0.0%	10.3%	39.0%
	Left lung mean dose (Gy)	9.1 Gy	1.0 Gy	4.5 Gy	17.4 Gy	19.6 Gy
	Left lung V_20Gy (%)	18.1%	0.0%	7.4%	37.0%	49.6%

Summary of patient characteristics and organ at risk doses for all patients treated with adjuvant radiotherapy for left-sided breast cancer (n = 332)

ISSN: 1748-717X