Hypofractionated Proton Boost Combined with External Beam Radiotherapy for Treatment of Localized Prostate Cancer

Figure 1

The planned dose distribution (panel a, b) for a patient receiving proton boost when using the rectal retraction rod and with dose volume histograms for bladder and rectum (panels c, d). The isodose levels shown are 95%, 90%, 70%, 50%, and 30%. The outer wall of the rectum is drawn by a yellow line.

(a)

(b)

(c)

(d)