Leonardi,V., Mari,J.L., Vidal,V., Daniel,M.
Motion simulation of an organ can be useful in some cases like organ study, surgery aid or tumor destruction. When using a non-invasive way of tumor destruction through transcutaneous transmition of waves, it is primordial to keep the wave beam focused on the tumor. When the tumor is not in movement, such a task is trivial. But when the tumor is located in a moving organ like the kidney, motion simulation is necessary. We present here an original method to obtain the kidney motion simulation: this is done using a mesh morphing (we consider the kidney has already been segmented and reconstructed for three different phases of the respiratory cycle). Such an approach allows a smooth transition between the different kidney models, resulting in a motion simulation. Thus, the method is purely geometric and does not need any kind of markers or tracking device. It gives directly a full 3D simulation and models are animated in real time. Finally, our approach is automatic and fast, so that it can easily be used in a medical environment.