Advantages of the Halo Approach
The advantage of marking certain voxels as “to be sacrificed” is to inform the optimizer which voxels shall be chosen when reducing the coverage. This prevents bad compromises, such as reducing the coverage in PTV voxels that are far away from any OAR.
- A faster treatment planning process
- A guarantee that the halo object has exactly the right size that fits to the allowed “sacrifice” in PTV coverage, thereby offering precise control over the compromise between PTV coverage and OAR sparing