ESTRO course on Image Guided Radiotherapy in Clinical Practice 2018

Challenge 1: baseline shifts, possible solutions

1.Volume image required to visualization 2.Quantification would require deformable image registration -> available but only offline 3. Online dosimetric evaluation would be required for a decision making process -> not available, yet 4.Compensation strategies: ➢ Perform an average IGRT shift ➢ Adapted PTV margins ➢ Re-planning