Title :
Shielding requirements of a 3T MRI examination room to limit radiated emission
Author :
Harberts, Dick W. ; van Helvoort, Mark
Author_Institution :
Electromagn. Competence Center, Philips Innovation Services, Eindhoven, Netherlands
Abstract :
Taking the emission requirements from IEC 60601-1-2 as starting point, a detailed analysis of the shielding requirements of an examination room for a 3T Magnetic Resonance Imaging scanner has been made. A 3D Finite Element model of scanner and shielding room has been built and the influence of slits on the shielding performance has been investigated. Comparison between simulations of shielding effectiveness according to the IEEE Std 299 near-field method and simulations of shielding effectiveness according to the IEC 60601-1-2 far-field method shows excellent agreement. In addition we have simulated near-field measurements with magnetic loop antennas.
Keywords :
IEEE standards; biomedical MRI; biomedical equipment; finite element analysis; loop antennas; radiation protection; shielding; 3D Finite Element model; 3T MRI examination room; 3T Magnetic Resonance Imaging scanner; IEC 60601-1-2 far-field method; IEEE Std 299 near-field method; emission requirement; magnetic flux density 3 T; magnetic loop antennas; near-field measurements; radiation emission; shielding effectiveness; shielding requirement; slit effect; Antenna measurements; Coils; Electromagnetic compatibility; IEEE standards; Magnetic resonance imaging; Magnetic shielding; Radio frequency; MRI; Magnetic Resonance Imaging; radiated emission; room shielding;
Conference_Titel :
Electromagnetic Compatibility (EMC EUROPE), 2013 International Symposium on
Conference_Location :
Brugge
