Table 2.

Summary of previous studies of FSRS for brain metastases

No. of reference	No. of patients	Mean age (years)	No. of tumor	Location of tumor	Treatment modality	Median tumor volume (mL)	Dose (Gy)/fraction	Median OS (months)	Local control rate (%)
6	51	55	72	Stem, elquant area	Primary	13.0	30–35/5	11	76 (at 1 year)
9	37	60	38	All	Primary	17.6	30–41/3–5	10	87 (at 1 year)
19	135	61	171	All	Primary	16.4	27–36/3	11	88 (at 1 year)
22	21	59	27	All	Primary	5.4	20–40/5	10	86.7 (at 1 year)
26	37	<65 (73%)	37	All	Resection cavity	28.8	24/3	6	80 (at 6 months)
Present study	23	61	29	All	Primary or resection cavity	18.0	24–33/2–3	10	91.7 (at 1 year)

FSRS : fractionated stereotactic radiosurgery, OS : overall survival