Title :
A New Decoupling Method for Quadrature Coils in Magnetic Resonance Imaging
Author :
Hui, Hon Tat ; Li, B.K. ; Crozier, Stuart
Author_Institution :
Sch. of Inf. Technol. & Electr. Eng., Queensland Univ., Brisbane, Qld.
Abstract :
A powerful decoupling method is introduced to obtain decoupled signal voltages from quadrature coils in magnetic resonance imaging (MRI). The new method uses the knowledge of the position of the signal source in MRI, the active slice, to define a new mutual impedance which accurately quantifies the coupling voltages and enables them to be removed almost completely. Results show that by using the new decoupling method, the percentage errors in the decoupled voltages are of the order of 10-7% and isolations between two coils are more than 170 dB
Keywords :
biomedical MRI; coils; active slice; decoupled signal voltages; decoupling method; magnetic resonance imaging; mutual impedance; quadrature coils; signal source position; Australia; Capacitors; Coils; Humans; Impedance; Information technology; Magnetic heads; Magnetic resonance imaging; Mutual coupling; Voltage; Decoupling method; magnetic resonance imaging (MRI); mutual impedance; quadrature coils; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Image Enhancement; Image Interpretation, Computer-Assisted; Magnetic Resonance Imaging; Reproducibility of Results; Sensitivity and Specificity; Transducers;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2006.881783
