On-Line Adaptive Radiation Therapy: Feasibility and Clinical Study

Figure 2

On-line plan adaptation process. After daily CBCT image sets are acquired, they are registered with planning CT image set via deformable registration, from which a 3D deformation field is generated and is used to deform original dose distribution. The deformed dose distribution is then fed to the optimization engine as the goal. In less than two minutes, reoptimized beam intensity maps are generated and final dose is calculated.