IMRT 2017

DAO differs from beamlet based optimization in that it does not rely on the use of a segmentation routine ( sequencing step ) to select the initial leaf sequence as this step is incorporated into the original optimization. Therefore, with DAO the treatment plan is optimized using a deliverable treatment solution . IMRT INVERSE PLANNING OPTIMIZATION: THE IMPORTANCE OF THE OPTIMIZATION ENGINE

RayStation 40 segments 5 sIMRT Beams @ 160 MLC

XiO 100 segments 5 sIMRT Beams @ 160 MLC

XiO 97 segments 5 sIMRT Beams @ 82 MLC

Direct Aperture Optimization Beamlet Based Optimization Beamlet Based Optimization