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Figure 3 | Radiation Oncology

Figure 3

From: Re-irradiation of recurrent head and neck carcinomas: comparison of robust intensity modulated proton therapy treatment plans with helical tomotherapy

Figure 3

Dose fall-off. Dose fall-off outside planning target volume for helical tomotherapy (HT) (blue) and intensity modulated proton therapy (IMPT) (grey). Mean doses in adjacent shells of 1 mm width around the planning target volume (PTV) within the respective patient’s body are given normalized to the prescribed dose. The slopes of the average dose fall-off differed between HT and IMPT (p< 0.0001). In addition, the 95% confidence intervals for the predicted dose values at a given distance are indicated by vertical bars.

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Radiation Oncology

ISSN: 1748-717X

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