Integral method for numerical simulation of MRI artifacts induced by metallic implants
S Balac1, G Caloz, G Cathelineau
1Institut de Recherche Mathématique de Rennes, Université de Rennes 1, Rennes, France.
Abstract:
Numerical simulation is a valuable tool for the study of magnetic susceptibility artifacts from metallic implants. A major difficulty in the simulation lies in the computation of the magnetic field induced by the metallic implant. A new method has been designed and implemented to compute the magnetic field induced by metallic objects of arbitrary shape. The magnetic field is expressed pointwise in terms of a surface integral. Efficient quadrature schemes are proposed to evaluate this integral. Finally, the method is linked to an artifact reconstruction model to simulate the images. Magn Reson Med 45:724-727, 2001.
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