. Author manuscript; available in PMC: 2014 Dec 9.

Published in final edited form as: J Nucl Med Radiat Ther. 2011 Dec 12;Suppl 4(1):3117. doi: 10.4172/2155-9619.s4-001

Table 2.

Stereotactic body radio surgery treatment parameters

Parameter
Median prescription dose (dose x fraction)	2400 cGy (800 cGy x 3)
Median prescription isodose (25%–75% quartile)	70% (70% – 75%)
Radio surgical tracking
By gold seed fiducials - no. (%)	16 (59%)
By bony spine landmarks - no. (%)	11 (41%)
Radio surgical beam collimation
By fixed collimator - no. (size range)	13 (10 mm – 50 mm)
By IRIS - no. (size range)	14 (5 mm – 60 mm)
Synchrony motion tracking - no. (%)	8 (30%)
Median CT-GTV (25%–75% quartile)	10.7 cm³ (5.4 cm³ – 19.4 cm³)
Median ¹⁸F-FDG-GTV (25%–75% quartile)	25.7 cm³ (12.9 cm³ – 46.6 cm³)
Median planning tumor volume (25%–75% quartile)	52.2 cm³ (23.1 cm³ – 74.6 cm³)

GTV= gross tumor volume