Title :
Study of the magnetic interaction of a 4-coil array and copper shielding with a PET/MRI using the finite-element method
Author :
Solis, S.E. ; Rodriguez, A.O. ; Tomasi, D.
Author_Institution :
Med. Dept., Brookhaven Nat. Lab., Upton, NY, USA
fDate :
Aug. 31 2010-Sept. 4 2010
Abstract :
The effect of the shielding in a PET-MRI system was numerically estimated by calculating the RF magnetic field, B1, produced by a coil array of 4 independent elements at the resonant frequency of 171 MHz (4T for protons). The array coil is located inside a μPET camera to simultaneously acquire PET and MR images of a rat brain. Profiles showed a good uniformity despite the shielding that is interacting between the coil array and the μPET camera. These limitations are currently being dealt with the fabrication of a birdcage coil design.
Keywords :
biomedical MRI; brain; copper; finite element analysis; positron emission tomography; μPET camera; 4-coil array; PET/MRI; RF magnetic field; birdcage coil design; copper shielding; finite-element method; frequency 171 MHz; magnetic interaction; rat brain; shielding effect; Arrays; Coils; Copper; Finite element methods; Magnetic fields; Magnetic resonance imaging; Positron emission tomography; Artifacts; Computer Simulation; Computer-Aided Design; Copper; Equipment Design; Equipment Failure Analysis; Finite Element Analysis; Image Enhancement; Magnetic Resonance Imaging; Magnetics; Models, Theoretical; Positron-Emission Tomography; Radiation Protection; Reproducibility of Results; Sensitivity and Specificity;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE
Conference_Location :
Buenos Aires
Print_ISBN :
978-1-4244-4123-5
DOI :
10.1109/IEMBS.2010.5627859
