Figure 3From: Ion therapy of prostate cancer: daily rectal dose reduction by application of spacer gel Box plots showing the distribution of V90 Rectum index for patients without spacer gel implant (a) and with spacer gel implant (b). Each box plots corresponds to the single patient case. Green and red arrow indicates the values of V90Rectum index of these patients, who were selected to be illustrated as the patient examples on the Figures 1 and 2.Back to article page