USE OF COLLECTION OF PLANS TO DEVELOP NEW OPTIMIZATION OBJECTIVES

摘要

A radiation therapy system includes a diagnostic image scanner (12) which acquires a multidimensional dataset of a subject that is reconstructed into at least one image representation of an object of interest. An image processing apparatus (72) of radiation therapy system includes a segmentation unit (74) which identifies a surface contour of the object of interest or other critical structures. A masking unit (82) determines a non-constant margin based on the identified surface contour and appends the determined non-constant margin to the identified surface contour. The non-constant margin is based on at least one of anisotropic motion surface morphology positional uncertainty proximity to other organs and probability of dose distribution. A planning processor (70) generates a radiation therapy plan which limits the delivery of therapeutic radiation to anatomy associated with the surface contour and appended non- constant margin. A radiation delivery system (40) delivers therapeutic radiation according to the generated plan.