PROBLEM TO BE SOLVED: To provide a gradient magnetic field coil configuring wiring patterns without using a loop coil not penetrated by a z-axis.SOLUTION: The gradient magnetic field coil includes: a nearly solenoid-shaped first coil generating a magnetic field distribution linear in the axial direction, in an imaging region of a magnetic resonance imaging apparatus and a nearly solenoid-shaped second coil disposed outside the first coil and inside a static magnetic field coil device, which generates a static magnetic field having a uniform magnetic field distribution in the imaging region, and suppressing a leakage magnetic field from the first coil to the static magnetic field coil device. In the gradient magnetic field coil, the interval between the first coil and the second coil is different in the circumferential direction and has a first region A1 (&theta=0, &pi) and a second region A2 (&theta=&pi/2) narrower than the first region A1. In the first coil, the wiring patterns 17a, 17b on the side of a zero-plane F0 passing through the center of the first coil and perpendicular to the axial direction (a z-axis direction) meander in the circumferential direction such that the wiring patterns 17a, 17b depart from the zero-plane F0 in the first region A1 and approach the zero-plane F0 in the second region A2.COPYRIGHT: (C)2012,JPO&INPIT【課題】z軸が貫通しないループコイルを用いることなく配線パターンを構成可能な傾斜磁場コイルを提供する。【解決手段】磁気共鳴イメージング装置の撮像領域に軸方向に線形な磁場分布を作る略ソレノイド状の第1コイルと、第1コイルの外側で、撮像領域に均一な磁場分布の静磁場を作る静磁場コイル装置の内側に配置され、第1コイルから静磁場コイル装置への漏れ磁場を抑制する略ソレノイド状の第2コイルとを備え、第1コイルと第2コイルの間隔が、周方向で異なり第1の領域A1(θ=0、π)と第1の領域A1より狭い第2の領域A2(θ=π/2)とを有し、第1コイルでは、第1コイルの中心を通り軸方向(z軸方向)に垂直なゼロ面F0側の配線パターン17a、17bが、第1の領域A1でゼロ面F0から離れ、第2の領域A2でゼロ面F0に近接して、周方向に蛇行している。【選択図】図1A
