Title :
SNR of Multi-Channel RF Coil Arrays for High-Field Brain Functional Magnetic Resonance Imaging
Author :
Wang, Shumin ; Ledden, Patrick J. ; Duyn, Jeff H.
Author_Institution :
LFMI-NINDS-NIH, Bethesda, MD
Abstract :
We performed a comparative study of the signal-to-noise ratio (SNR) of 16-channel and 4-channel radio-frequency (RF) coil arrays for magnetic resonance imaging (MRI) at 7.0 Tesla (300 MHz). The combined-field integral-equation (CFIE) method was employed to resolve the fine geometric structures in coil arrays. The numerical approach is verified by MRI experiments of the 16-channel array at first and then applied to the 4-channel array. Results show that increasing the number of channels greatly benefits the average SNR and its coverage
Keywords :
biomedical MRI; brain; coils; magnetic field integral equations; 300 MHz; 7.0 T; brain; combined field integral equation method; fine geometric structures; magnetic resonance imaging; multichannel RF coil arrays; signal to noise ratio; Biomedical imaging; Brain; Coils; Dielectric losses; Head; Humans; Imaging phantoms; Magnetic resonance imaging; RF signals; Radio frequency; Magnetic resonance imaging; RF coils; signal-to-noise ratio;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249385
