Table 2 Maximum shift in mm of the isodose lines for the modulated case based on a modulation power of 800 μm compared to the non-modulated case for the patients and beam directions as shown in Fig. 6. A negative sign stands for a shorter range
From: Effects of the Bragg peak degradation due to lung tissue in proton therapy of lung cancer patients
Patient/beam direction | Maximum range uncertainty in mm for isodose lines | ||
|---|---|---|---|
95% | 80% | 20% | |
1 / 270° | −8 | −5 | 3 |
2 / 0° | −8 | −10 | 5 |
3 / 270° | −4 | −3 | 2 |
4 / 315° | −2 | −2 | 2 |