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The dose distributions for one patient with nasopharyngeal carcinoma planned for SmartArc-based volumetric modulated arc therapy (VMAT-S) (left) and intensity-modulated radiation therapy (IMRT) (right). Colour-wash areas: 68 Gy = red; 60 Gy = green; 54 Gy = blue. The green, purple, red, yellow, brown and indigo lines were isodose curves of 68, 60, 54, 48, 42, and 30 Gy, respectively. See online for colour images.
