Serial FEM/XFEM-Based Update of Preoperative Brain Images Using Intraoperative MRI
Figure 2
Detailed block diagram of the three subsystems of our serial preoperative image-update system. (a) Building of the biomechanical model from the preoperative images. (b) Calculation of the volume displacement field of the initial biomechanical model using the displacement fields of surface landmarks tracked between a pair of successive iMR images. The updated iMR images are used for validation. For each subsystem, inputs are in green, outputs are in red, and steps related to the definition and use of a discontinuity are in blue.
