Simultaneous modulated accelerated radiation therapy for esophageal cancer: A feasibility study

Table 1 Patient and tumor characteristics

No.	Site	Stage1	V-GTV (cc)	V-LN (cc)	V-PTV66 (cc)	V-PTV60/54 (cc)
1	Upper	T2N1M1b	11.5	11	80	206.3
2	Middle	T3N0M0	18.1	0	49.1	151.2
3	Upper	T3N1M1a	38.8	3	102.1	253.3
4	Upper	T3N1M0	25.4	1.3	75	191.6
5	Upper	T3N2M0	16.9	1	47.8	196.4
6	Middle	T3N1M0	24.6	6	86.8	197.6
7	Middle	T4N1M1b	32.1	2.7	82.5	214.4
8	Middle	T3N0Mo	15.8	0	42.5	149.9
9	Middle	T3N0Mo	14.9	0	41	144.6
10	Upper	T3N0Mo	16.1	0	45.5	161.9

¹According to the 2002 American Joint Committee on Cancer staging system. V-GTV: Volume of gross target tumor; V-LN: Volume of lymph node; V-PTV: Volume of planning target volume.