Fig 6.

Doses measured in the irradiation of frame patterns A–C for a pencil beam. Point doses for a pencil beam with an energy of 430.0 MeV/u at energies (a–c) 140.0, 302.1, and 430.0 MeV/u, (a–c, respectively), and with an RS of 3.0, 12.0, and 24.0 mm (d–f, respectively). The measured absolute doses are shown for patterns A (circles), B (triangles), and C (squares), whereas the TPS-calculated absolute doses are shown for patterns A (dotted lines), B (solid lines), and C (dashed lines). The errors in the calculation relative to the measurement are shown for patterns A (red dotted lines), B (red solid lines), and C (red dashed lines). (g) Three selected frame patterns.