Volumetric modulated arc therapy for lung stereotactic radiation therapy can achieve high local control rates

Radiation Oncology

Table 1 Patient and tumor characteristics

Factors		No.	Rate
Age
	Range	56-95 years old
	Median	73 years old
Sex
	Male	48	72%
	Female	19	28%
K-PS
	90-100%	39	58%
	80-90%	20	30%
	70%	2	3%
	Unknown	6	9%
Smoking history
	With	29	43%
	Without	17	25%
	Unknown	21	31%
T stage
	T1a	28	42%
	T1b	14	21%
	T2	6	9%
	T3	3	4%
	Metastatic	16	24%
Pathological confirmation
	Without	26	39%
	With	41	61%
Maximum diameter of primary tumor
	Range	7-51 mm
	Median	20 mm
Tumor location
	Left upper	18	27%
	Left lower	10	15%
	Right upper	17	25%
	Right middle	9	13%
	Right lower	13	19%
Combined chemotherapy
	Both before and after SBRT	2	3%
	Before SBRT	5	7%
	After SBRT	3	4%
	None	57	85%

ISSN: 1748-717X