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Figure 2 | Radiation Oncology

Figure 2

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

Figure 2

Conformity indices. Ratio of the Paddick conformity indices for helical tomotherapy (CItomo) and intensity modulated proton therapy (CIproton) plans for all target volumes of this study. The ratios are given for isodose values from 95% to 20% of the prescribed dose. Data points related to the same target volume are connected by grey lines. The average dependence of the conformity index ratio on isodose was estimated by linear quadratic Taylor series expansion (black solid curve). The 95% confidence intervals of the predicted mean isodoses by this fit are drawn as black vertical bars.

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