Figure 5From: The effects of computed tomography image characteristics and knot spacing on the spatial accuracy of B-spline deformable image registration in the head and neck geometryRegistration results of three head-and-neck CT cases (patient A, B, C) with a realistic known imposed displacement derived from a rescan CT of the same patient. The images in row I show the 3D residual displacement maps between the simulated moving image and the target image, plotted on an axial CT slice of the planning CT. The histograms (row II) indicate the 3D deformation vector length of the known imposed displacements and the resulting registration. The histograms (row III) indicate the 3D residual displacements between known imposed displacements and the resulting registration at BKS = 15 mm.Back to article page