Fig. 1From: Effects of the Bragg peak degradation due to lung tissue in proton therapy of lung cancer patientsCT slices of one exemplary patient (patient 1): for the beam directions 0°, 270° and 315° plans were optimized individually consisting of one single field. On the bottom right the sum of these plans is shown. The CTV is marked in white, trachea in light green and spinal cord in red. On the right a color bar is given indicating the relative doseBack to article page