Quantitative Image Analysis
Image Registration
• Thin-plate spline (TPS) deformable image registration
• B-spline deformable image registration
• Finite element model-based deformable registration
• Two-dimensional (2D) image registration software
• Three-dimensional (3D) image registration software

The 3D registration program can align image volumes from CT, PET, MRI, and/or other imaging modalities. It has the following features: (1) Resize the floating volume according to the reference volume size and resolution so as to keep the same volume resolution in every direction for the two volumes; (2) Automatic registration based on mutual information; (3) Manual registration using 3D translation and rotation; (4) It includes two deformable registration approaches; (5) Displays volume in all directions as well as the fusion results; and (6) Displays the location line in 3D space and easily locates each point in 3D space. The user interface is also very friendly and direct.

Figure 5. The 3D image registration software.

• 3D to 2D Registration
• Slice to Volume Registration
Image Classification
Image Segmentation
Attenuation Correction
Partial Volume Correction
Motion Correction