Tangent-based volumetric modulated arc therapy for advanced left breast cancer

Radiation Oncology

Table 1 Dose parameters and priorities for planning optimization

Structure	Volume [%]	Dose [cGy]	Priority	Structure	Volume [%]	Dose [cGy]	Priority	Structure	Volume [%]	Dose [cGy]	Priority
PTV	0	5163	950	LungL1	41	0	550	BreastR1	17	668	450
	15	5162	710		30	277	550		11	723	450
	100	5160	800		23	580	550		8	774	450
	98	5161	750		14	1228	550		3	838	450
					8	1742	550		0	870	450
					4	2281	550
Ring	42	1697	100	LungL2	28	0	500	BreastR2	14	891	400
	31	2214	100		20	41	500		9	906	400
	19	2883	100		12	222	500		5	975	400
	10	3342	100		7	415	500		2	1050	400
	3	4080	100		1	711	500		0	1089	400
LungR	27	314	300	Heart1	43	1135	300	ShoulderL	6	843	300
	18	402	300		35	1248	300		3	1009	300
	10	625	300		28	1484	300		0	1142	300
	4	862	300		19	1801	300
	0	1139	300		12	2209	300
					6	2710	300
				Heart2	23	1042	350	ShoulderR	7	552	300
					17	1171	350		3	617	300
					13	1311	350		0	756	300
					8	1465	350
					5	1598	350

ISSN: 1748-717X