Figure 6.

Quotient volume histograms from S^m,h_c prescriptions for the complex HNSCC patient. Cases shown include $S_{\text{max}}^{2,0.1–0.8}$ (a), $S_{\text{max}}^{10,0.1–0.8}$ (b) $S_{\text{int}}^{2,0.1–0.8}$ (c), $S_{\text{int}}^{10,0.1–0.8}$ (d). As the sigmoid slope increases, the QVHs become increasingly sensitive to the sigmoid centre.