A physics based method for combining multiple anatomy models with application to medical simulation.
We present a physics based approach to the construction of anatomy models by combining components from different sources; different image modalities, protocols, and patients. Given an initial anatomy, a mass-spring model is generated which mimics the physical properties of the solid anatomy components. This helps maintain valid spatial relationships between the components, as well as the validity of their shapes. Combination can be either replacing/modifying an existing component, or inserting a new component. The external forces that deform the model components to fit the new shape are estimated from Gradient Vector Flow and Distance Transform maps. We demonstrate the applicability and validity of the described approach in the area of medical simulation, by showing the processes of non-rigid surface alignment, component replacement, and component insertion.
School of Computing, University of Leeds, UK.
Yanong
Y
Zhu
Derek
D
Magee
Rishya
R
Ratnalingam
David
D
Kessel
D003198:Computer Simulation; D005260:Female; D013502:General Surgery / Q000193:education; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008953:Models, Anatomic; D010825:Physics; D014057:Tomography, X-Ray Computed