Title :
Simulation study of a novel Relaxometer shield design
Author :
Bauer, L.M. ; Hensley, D.W. ; Goodwill, P.W. ; Conolly, S.M. ; Griswold, M.A.
Author_Institution :
Dept. of Phys., Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
Developing tracers for MPI and related applications requires a thorough understanding of underlying relaxation processes. In X-Space MPI reconstruction, relaxation has a profound impact on the image through a decrease in SNR and direction-dependent blurring. To probe the relaxation of potential MPI tracers, Goodwill et al., have developed an X-Space Relaxometer that measures the MPI point spread function and accurately predicts image quality.[1,2] The present work introduces a new relaxometer with improved eddy current shielding to achieve a significant gain in sensitivity. A simulation of the enhanced shielding has shown to attenuate external interference by more than 40dB in the detection bandwidth.
Keywords :
biomagnetism; biomedical equipment; biomedical measurement; eddy currents; magnetic particles; magnetic relaxation; optical transfer function; radiation protection; MPI point spread function; SNR; X-Space MPI reconstruction; X-Space Relaxometer; detection bandwidth; direction-dependent blurring; eddy current shielding; external interference attenuation; image quality; potential MPI tracers; relaxation processes; relaxometer shield design; sensitivity gain; Attenuation; Bandwidth; Coils; Copper; Geometry; Interference; Magnetic fields;
Conference_Titel :
Magnetic Particle Imaging (IWMPI), 2015 5th International Workshop on
Conference_Location :
Istanbul
Print_ISBN :
978-1-4799-7269-2
DOI :
10.1109/IWMPI.2015.7107025
