Integral method for numerical simulation of MRI artifacts induced by metallic implants.
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.
Institut de Recherche Mathématique de Rennes, Université de Rennes 1, Rennes, France.
S
S
Balac
G
G
Caloz
G
G
Cathelineau
B
B
Chauvel
J D
JD
de Certaines
D016477:Artifacts; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008280:Magnetics; D008433:Mathematics; D008670:Metals; D008962:Models, Theoretical; D019736:Prostheses and Implants
D008670:Metals