Title :
Asymmetric Gradient Coil Design by Numerical Approach for MRI Brain Imaging
Author :
Xiao Fei You ; Wen Hui Yang ; Tao Song ; Hui Xian Wang ; Zheng Wang
Author_Institution :
Beijing Key Lab. of Bioelectromagnetism, Inst. of Electr. Eng., Beijing, China
fDate :
6/1/2012 12:00:00 AM
Abstract :
A design example of an asymmetric transverse gradient coil by a numerical approach is presented in this paper. The gradient coil is designed for brain imaging by ultra-high field MRI. The coil can achieve high gradient strength and high slew rate due to its small diameter. The wire pattern of the coil is asymmetric with the diameter spherical volume (DSV) located close to the edge of the coil, which enables the head of the subject to reach the DSV. A corresponding shield coil is also designed to suppress the induced eddy currents in surrounding structures.
Keywords :
biomedical MRI; boundary-elements methods; brain; coils; DSV; MRI brain imaging; asymmetric gradient coil design; asymmetric transverse gradient coil; boundary element method; diameter spherical volume; eddy currents; electromagnetic coils; numerical design approach; shield coil; slew rate; stream function theory; ultrahigh field MRI; wire pattern; Brain; Coils; Magnetic fields; Magnetic resonance imaging; Torque; Wires; Brain imaging; gradient coil; numerical approach; ultra-high field MRI;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2011.2174596
