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Figure 5: Radiotherapy treatment planning for tumor-bed boost following craniospinal irradiation. Dose-wash ranging from 50-107% of the prescription dose in axial (upper-panel) and mid-sagittal (lower-panel) sections showing good coverage of the planning target volume (red line) using simple parallel opposed portals (a and d); three-dimensional conformal radiotherapy (b and e); and intensity-modulated radiation therapy (c and f). Note significant sparing of surrounding uninvolved normal tissues including cochlea from high-doses with modern conformal techniques (b, e and c, f)

Figure 5: Radiotherapy treatment planning for tumor-bed boost following craniospinal irradiation. Dose-wash ranging from 50-107% of the prescription dose in axial (upper-panel) and mid-sagittal (lower-panel) sections showing good coverage of the planning target volume (red line) using simple parallel opposed portals (a and d); three-dimensional conformal radiotherapy (b and e); and intensity-modulated radiation therapy (c and f). Note significant sparing of surrounding uninvolved normal tissues including cochlea from high-doses with modern conformal techniques (b, e and c, f)