A Hybrid IMRT/VMAT Technique for the Treatment of Nasopharyngeal Cancer

Figure 3

Representative dose-volume histogram of spinal cord, optic chiasm, brainstem, and optic nerve for 9F-IMRT, 2ARC-VMAT, and Hybrid IMRT/VMAT. The curves of 9F-IMRT, 2ARC-VMAT, and Hybrid IMRT/VMAT are indicated in solid lines, dashed lines, and dotted lines, respectively.