. Author manuscript; available in PMC: 2009 Jun 13.

Published in final edited form as: Int J Radiat Oncol Biol Phys. 2007 May 21;69(2):444–453. doi: 10.1016/j.ijrobp.2007.03.018

Table 1.

Treatment plan objectives

Target prescription doses
GTV (Prostate)	100% to 79.2 Gy/CGE

CTV (GTV & seminal vesicles)	100% to 50.4 Gy/CGE

PTV2 (GTV + 5 mm margin)	98% to 79.2 Gy/CGE

PTV1 (CTV + 5 mm margin)	98% to 50.4 Gy/CGE

Tolerance doses for healthy organs
Rectum	<50% to 60 Gy/CGE
	<35% to 65 Gy/CGE
	<25% to 70 Gy/CGE
	<15% to 75 Gy/CGE
	maximum 84.7 Gy/CGE

Bladder	<50% to 65 Gy/CGE
	<35% to 70 Gy/CGE
	<25% to 75 Gy/CGE
	<15% to 80 Gy/CGE
	maximum 84.7 Gy/CGE

Femoral Head	maximum 50 Gy/CGE

Penile Bulb	mean dose < 52.5 Gy/CGE

Abbreviations: GTV = gross tumor volume; CGE = cobalt Gray-equivalent; CTV = clinical target volume; PTV = planning target volume.