Table 1.

Patient, tumor and previous RT characteristics

n = 42 patients	n (%)Median (range)
Age	58 years (23-81)
Gender
Male	19 (45%)
Female	23 (55%)
Performance Status
ECOG 0-2	37 (88%)
ECOG 3-4	5 (12%)
Primary Cancer Diagnosis
Breast	12 (29%)
Lung, NSCLC	10 (24%)
Melanoma	9 (21%)
Head and Neck	5 (12%)
Other/Unknown	6 (14%)
Intact Brain Metastasis	20 (48%)
Resection Cavity	22 (52%)
GTR	11
STR	11
Target Volume
GTV/Cavity Maximum Dimension	3.9 cm (0.8-6.4 cm)
GTV/Cavity Volume	13.6 cc (0.2 – 57.0 cc)
PTV Volume	24.5 cc (0.8 – 122.0 cc)
Previous RT and Dose to HR site
None	20 (48%)
WBRT	5 (12%)
	37.5 Gy (30-45)
SRS	5 (12%)
	18 Gy (5-21)
IMRT	4 (10%)
	47.5 Gy (10-60)
Combination	8 (19%)
	41.25 Gy (10 -75)
Time from Previous RT to HR	13 months (0.3-32.4)

Abbreviation: NSCLC, non-small cell lung cancer.