Table 1 Dose-volume constraint or equivalent parameters for partly acceptable dose distribution in our example
From: Dose-volume constrained optimization in intensity-modulated radiation therapy treatment planning
Assigned region (color in Figure 1 ) | Organ | Dose-volume constraint | Set of parameters for being partly acceptable |
|---|---|---|---|
PTV (blue) | Prostate | \(V_{82.1} \ge87\%\) | \((D_{1}^{\mathrm{L}},\zeta_{1}^{\mathrm{L}}) = (82.1, 0.87)\) |
\(V_{95.9} < 2\%\) | \((D_{1}^{\mathrm{U}},\zeta_{1}^{\mathrm{U}}) = (95.9, 0.98)\) | ||
OAR1 (green) | Right femoral head | \(V_{30} < 10\%\) | \((D_{2}^{\mathrm{U}},\zeta_{2}^{\mathrm{U}}) = (30, 0.9)\) |
OAR2 (red) | Bladder | \(V_{20} < 60\%\) | \((D_{2}^{\mathrm{U}},\zeta_{2}^{\mathrm {U}}) = (20, 0.4)\) |
\(V_{45} < 30\%\) | \((D_{2}^{\mathrm{U}},\zeta_{2}^{\mathrm{U}}) = (45, 0.7)\) | ||
\(V_{50} < 15\%\) | \((D_{2}^{\mathrm{U}},\zeta_{2}^{\mathrm{U}}) = (50, 0.85)\) | ||
OAR3 (cyan) | Rectum | \(V_{20} < 40\%\) | \((D_{2}^{\mathrm{U}},\zeta_{2}^{\mathrm{U}}) = (20, 0.6)\) |
\(V_{30} < 20 \%\) | \((D_{2}^{\mathrm{U}},\zeta_{2}^{\mathrm{U}}) = (30, 0.8)\) | ||
\(V_{35} < 10\%\) | \((D_{2}^{\mathrm{U}},\zeta_{2}^{\mathrm{U}}) = (35, 0.9)\) | ||
OAR4 (magenta) | Left femoral head | \(V_{30} < 10\%\) | \((D_{2}^{\mathrm{U}},\zeta_{2}^{\mathrm{U}}) = (30, 0.9)\) |