Figure 1From: GTV-based prescription in SBRT for lung lesions using advanced dose calculation algorithms PDD for 30 mm collimator calculated with Ray-Tracing and Monte-Carlo algorithms in phantom with different densities (left) on the beam axis (central) and 1 cm off axis (right), GTV (red, density = 1), PTV (blue), lung (green, density = 0.3). Back to article page