Afis Ajala1, Yihe Hua1, Desmond Teck Beng Yeo1, Mark Vermilyea1, and Thomas Foo1
1GE Global Research, Niskayuna, NY, United States
1GE Global Research, Niskayuna, NY, United States
An asymmetric gradient coil design can give a unique wider
patient-bore compared to conventional symmetric gradient coils, providing a
much more open patient space and reducing claustrophobia for whole-body MRI
scanners. The asymmetric design also
results in lower $$$\vec{E}$$$-fields.
Figure 1:
2D view of the sWBG (A) and aWBG (B) gradients showing the increase in diameter
of the bore outside the field of view (FOV) for the aWBG gradient coil. The
diameter of the FOV in the transverse and axial dimensions are depicted by the
blue rectangle.
Figure 3:
The primary (blue color) and shield (red color) coils of the whole-body sWBG
(top row) and aWBG (bottom row) designs are shown in 3D for the x, y and z gradient
coils. Notice the axial asymmetry of the aWBG transverse coils compared to the
sWBG transverse coils. P indicates the patient end.
