Advanced Skills in Modern Radiotherapy 2018

Auto – Segmentation

• Atlas based segmentation

• Propagation of segmented structures from an atlas onto the patient image using deformable registration (Lim and Leech, 2017)

• Atlas can be based on: ➢ Single patient dataset ➢

Multiple patient data (based on an average of a range of patients from multiple libraries) ➢ Model based (using library of previously manually contoured patients)