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RESEARCH
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PHASE 3
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PHASE 2
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SENSOR FUSION
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MRI + RF
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Sub2
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Sub3
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CAS-H
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VR-BASED TRAINING
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NEUROSURGERY
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SMART IMPLANTS
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JOINT KINEMATICS
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OPHTHALMOLOGY
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SOFT TISSUES
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ORTHOMIS
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VESSEL ANALYSIS
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SYSTEMS FACE
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CARDIAC ROBOTICS
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PHASE 1

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INTERNAL

IMPRESSUM
MRI + RF

02/3 Simulation environment for interventional training and planning

A cap-choke catheter antenna for microwave ablation treatment. The upper picture shows the antenna and the lower one the E-field distribution it produces when inserted into tissue (calculated using a non uniform FDTD method).

The goal of this project is to develop a comprehensive, virtual reality based system for the realistic training of hepatic tumour treatment by RF thermoablation, comparison and acceleration of existing simulation methods and the thorough in vitro and in vivo validation of the applied components for mathematical simulation.

During the past decade significant advances have been made in the simulation of heat ablation both in the context of HF and hyperthermia treatment. In a finite difference based numerical solution approach has been applied for the simulation of bi- and multi-polar thermoablation. In vitro experiments demonstrated good agreement with measured and calculated volumes of coagulation. A first program package based on this method has already been implemented, allowing the simulation of an intervention based on individual patient anatomy (liver, tumour and vascularity). The usage of a multi-scale numerical solution approach allowed to significantly reducing computation time.

In this project the different simulation approaches will be compared, adapted, improved and new ones will be added where necessary, in order to match the needs of a surgical training environment in computational performance and the precision of the simulation.

In a later phase of the work the simulation package will be extended in order to be able to account for effects of perfusion. The performance of the simulation package will be thoroughly validated both under ex vivo and in vivo conditions. The resulting package will then be embedded into a virtual reality based environment. The most important aspects to be addressed are the generation of variable surgical scenes building on the results of the first phase of Co-Me and the possibly realistic emulation of the interventional environment including imaging aspects and force feedback.

Project Leader: Niels Kuster - IT'IS Foundation
Gabor Szekely - Computer Vision Laboratory, ETH Zurich

 


Last update of project infos on 2011-03-07.                                                                                                                                                                                                                                                

Last update 2006-06-14
The National Centres of Competence in Research (NCCR) are a research instrument of the Swiss National Science Foundation.