Title :
Experimental Validation of MRI Dosimetric Simulations in Phantoms Including Metallic Objects
Author :
Giordano, Daniela ; Zilberti, Luca ; Borsero, Michele ; Chiampi, Mario ; Bottauscio, Oriano
Author_Institution :
Ist. Naz. di Ricerca Metrol., Turin, Italy
Abstract :
This paper presents and discusses a comparative numerical and experimental analysis of the electromagnetic (EM) phenomena arising in a laboratory phantom radiated by a radio-frequency field, simulating the exposure in a magnetic resonance imaging (MRI) context. A specific frequency-domain coupled finite element-boundary element solver, running in graphical processing unit environment, has been developed to analyze the EM effects as well in the presence of metallic objects simulating prosthetic implants. The experimental setup consists of an antenna radiating a cylindrical box filled with a tissue simulating liquid; a bulk metallic parallelepiped can be included to mimic the presence of a prosthesis.
Keywords :
biological tissues; biomedical MRI; biomedical materials; boundary-elements methods; dosimetry; finite element analysis; frequency-domain analysis; graphics processing units; phantoms; prosthetics; MRI dosimetric simulations; antenna radiation; bulk metallic parallelepiped; cylindrical box; electromagnetic phenomena; experimental analysis; experimental validation; graphical processing unit; laboratory phantom; magnetic resonance imaging; metallic objects; numerical analysis; prosthetic implants; radiofrequency field; specific frequency-domain coupled finite element-boundary element solver; tissue simulating liquid; Antenna measurements; Antennas; Current measurement; Implants; Magnetic resonance imaging; Phantoms; Radio frequency; Boundary element methods (BEM); electromagnetic (EM) fields; electromagnetic measurements; finite element methods (FEM); magnetic resonance imaging (MRI);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2323428
