Figure 3.

Axial target dose boost distributions from $P_{\text{max}}^n$ prescriptions for the complex HNSCC patient. Linear (a), square root (b), and quadratic (c) prescriptions and their respective plans (d–f), along with isodose lines of 70 Gy (yellow), 50 Gy (red), and 40 Gy (violet). Note that the dose gradients in the linear case are softened in the square root case by escalating dose to a larger volume and sharpened in the quadratic case by escalating dose to a smaller volume.