Performance evaluation of deformable image registration systems - SmartAdapt^® and Velocity™

To commission and validate commercial deformable image registration (DIR) systems (SmartAdapt^® and Velocity™ using task group 132 (TG-132) digital phantom datasets. Additionally, the study compares and verifies the DIR algorithms of the two systems.The DIR algorithms of SmartAdapt and Velocity were commissioned and their deformation results were compared. Both systems can be used for clinical purpose. While there were only minimal differences between the two systems, Velocity provided lower values for parotids, bladder, rectum, and prostate (soft tissue) compared to SmartAdapt. However, for mandible, spinal cord, and femoral heads (rigid structures), both systems showed nearly identical results