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Focused ultrasonic therapy planning: Metamodeling, optimization, visualization

: Clees, T.; Hornung, N.; Nikitin, I.; Nikitina, L.; Steffes-lai, D.; Klimenko, S.


Journal of computational science 5 (2014), Nr.6, S.891-897
ISSN: 1877-7503
Fraunhofer SCAI ()

We present a generic approach for focused ultrasonic therapy planning on the basis of numerical simulation, multi-objective optimization, stochastic analysis and visualization in virtual environments. A realistic test case is used to demonstrate the approach. RBF metamodeling of simulation results is performed for continuous representation of two optimization objectives. The non-convex Pareto front of the objectives is determined by means of non-dominated set and local improvement algorithms. Uncertainties of metamodeling are estimated by means of a cross-validation procedure. The 3D visualization in virtual environment framework Avango allows detailed inspection of MRT images, the corresponding material model and spatial distribution of the resulting thermal dose.