CyberKnife SBRT treatment plan (36.25 Gy × 5 fractions prescribed to the 81% isodose line (white) with a 44.75 Gy maximum dose). Shown are the prostate (43.6 cm3, red) and PTV (77.8 cm3, orange). A bladder (green) volume of 1.66 cm3 received 37 Gy and 0.4 cm3 of the rectum (yellow) received 36 Gy.