Spine SRS

Table of Contents

How Objects are Identified

Object Menu

Object Manipulation saves information about the Name, Type and Role for each object.

Clinical Protocol Editor

The clinical protocols have the following information for each entry in the OAR Constraints list: Organ Type.

Finding the PTV

The software searches for the PTV to treat in the following order:

  1. Role = PTV. If there are no fitting objects, then

  2. Role = CTV. If there are no fitting objects, then

  3. Type = Tumor.

Finding the Boost

The software automatically detects an object within the PTV as the boost if all of the following conditions are met:

  • The boost is completely contained within the PTV
  • The boost must be assigned the same Role and/or Type as the PTV (following the rules above).

If detected, the software uses the boost for a simultaneously integrated boost (SIB) plan. The VMAT optimization uses the prescription and constraints entered for the PTV for the “pure” PTV (PTV – boost) instead.

Finding the OARs

The software compiles a list of organ types from the Clinical Protocol Editor. For each Organ Type in this list, the software searches for the OARs in the following order:

  1. Type = Organ Type. If multiple objects are found, then additionally

  2. Role = OAR.

Art-No. 60919-40EN

Date of publication: 2019-05-22