Constraint-based Simulation for Non-Rigid Real-time Registration
| Authors | |
|---|---|
| Year of publication | 2014 |
| Type | Article in Proceedings |
| Conference | Medicine Meets Virtual Reality 21: NextMed/MMVR21 |
| MU Faculty or unit | |
| Citation | |
| Doi | http://dx.doi.org/10.3233/978-1-61499-375-9-76 |
| Field | Informatics |
| Keywords | elastic registration; constraint-based simulation; finite element method |
| Description | In this paper we propose a method to address the problem of non-rigid registration in real-time. We use Lagrange multipliers and soft sliding constraints to combine data acquired from dynamic image sequence and a biomechanical model of the structure of interest. The biomechanical model plays a role of regulariza- tion to improve the robustness and the flexibility of the registration. We apply our method to a pre-operative 3D CT Scan of a porcine liver that is registered to a se- quence of 2D dynamic MRI slices during the respiratory motion. The finite ele- ment simulation provides a full 3D representation (including heterogeneities such as vessels,tumor,. . . ) of the anatomical structure in real-time. |
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