Patent ID: 9075119
Filing Date: 2015-07-07
Classification: G01R

Abstract:
1. A gradient magnetic field coil, comprising: a first coil substantially in a solenoid form for generating a magnetic field distribution that is linear in an axis direction in an image capturing region of a magnetic resonance imaging device; and a second coil that is substantially in a solenoid form and is arranged outside the first coil and inside a static magnetic field coil device for generating a static magnetic field with a uniform magnetic field distribution in the image capturing region, the second coil reducing a residual magnetic field from the first coil to the static magnetic field coil, wherein a gap between the first coil and the second coil changes in a circumferential direction, the gap including a first region and a second region in which the gap between the first coil and the second coil is narrower than in the first region, and wherein the first coil is arranged such that a wiring pattern that is on a side of zero plane, the zero plane including a center of the first coil and being perpendicular to the axis direction, is serpentine in the circumferential direction such as to be distant from the zero plane in the first region and close to the zero plane in the second region.