Validation of Deformable Image Registration by Using a B-spline and Optical-Flow Algorithm in Head and Neck Cancer Cases

To verify the usefulness of the recalculated dose (reDose) with deformed image (dCT) and contour structures (dST), we obtained the reDose in the treatment planning system by using dCT and dST, and analyzed the accuracy of both the deformed dose (dDose) acquired by using commercialized deformable image registration (DIR) algorithms and the reDose by comparing it with replan dose (rDose). Because dCT and dST may affect the reDose calculation for...