Figure 2From: Optimal organ-sparing intensity-modulated radiation therapy (IMRT) regimen for the treatment of locally advanced anal canal carcinoma: a comparison of conventional and IMRT plansDose distributions by treatment arm on the same coronal CT slice through both target volumes and avoidance structures. This CT slice also shows the sparing of the external genitalia, small bowel and iliac crests in arms B, C, and D as compared with arm A.Back to article page